I compiled a list of the Driver's and Manufacturer's Champions back to 1979. I also added some interesting stats.

World Championships
Year Driver's Champion (country) Co-driver (country) Car Manufacturer's Champion Car
1979 Björn Waldegård (SWE) Hans Thorszelius (SWE) Ford Escort RS1800 Ford Escort RS1800
1980 Walter Röhrl (GER) Christian Geistdörfer (GER) Fiat 131 Abarth Fiat 131 Abarth
1981 Ari Vatanen (FIN) David Richards (GBR) Ford Escort RS1800 Talbot Sunbeam Lotus
1982 Walter Röhrl (GER) Christian Geistdörfer (GER) Opel Ascona 400 Audi Quattro
1983 Hannu Mikkola (FIN) Arne Hertz (SWE) Audi Quattro Lancia Rally 037
1984 Stig Blomqvist (SWE) Björn Cederberg (SWE) Audi Quattro A2 Audi Quattro A2
1985 Timo Salonen (FIN) Seppo Harjanne (FIN) Peugeot 205 Turbo 16 E2 Peugeot 205 Turbo 16 E2
1986 Juha Kankkunen (FIN) Juha Piironen (FIN) Peugeot 205 Turbo 16 E2 Peugeot 205 Turbo 16 E2
1987 Juha Kankkunen (FIN) Juha Piironen (FIN) Lancia Delta HF 4WD Lancia Delta HF 4WD
1988 Massimo Biasion (ITA) Tiziano Siviero (ITA) Lancia Delta Integrale Lancia Lancia Delta Integrale
1989 Massimo Biasion (ITA) Tiziano Siviero (ITA) Lancia Delta Integrale 16V Lancia Delta Integrale 16V
1990 Carlos Sainz (ESP) Luís Moya (ESP) Toyota Celica GT-Four Lancia Delta Integrale 16V
1991 Juha Kankkunen (FIN) Juha Piironen (FIN) Lancia Delta Integrale 16V Lancia Delta Integrale 16V
1992 Carlos Sainz (ESP) Luís Moya (ESP) Toyota Celica Turbo 4WD Lancia Delta HF Integrale
1993 Juha Kankkunen (FIN) Nicky Grist (GBR) Toyota Celica Turbo 4WD Toyota Celica Turbo 4WD
1994 Didier Auriol (FRA) Bernard Occelli (FRA) Toyota Celica Turbo 4WD Toyota Celica Turbo 4WD
1995 Colin McRae (GBR) Derek Ringer (GBR) Subaru Impreza 555 Subaru Impreza 555
1996 Tommi Mäkinen (FIN) Seppo Harjanne (FIN) Mitsubishi Lancer Evo III Subaru Impreza 555
1997 Tommi Mäkinen (FIN) Seppo Harjanne (FIN) Mitsubishi Lancer Evo IV Subaru Impreza WRC
1998 Tommi Mäkinen (FIN) Risto Mannisenmäki (FIN) Mitsubishi Lancer Evo V Mitsubishi Lancer Evo V
1999 Tommi Mäkinen (FIN) Risto Mannisenmäki (FIN) Mitsubishi Lancer Evo VI Toyota Corolla WRC
2000 Marcus Grönholm (FIN) Timo Rautiainen (FIN) Peugeot 206 WRC Peugeot 206 WRC
2001 Richard Burns (GBR) Robert Reid (GBR) Subaru Impreza WRC Peugeot 206 WRC
2002 Marcus Grönholm (FIN) Timo Rautiainen (FIN) Peugeot 206 WRC Peugeot 206 WRC
2003 Petter Solberg (NOR) Phil Mills (GBR) Subaru Impreza WRC 2003 Citroën Xsara WRC
2004 Sébastien Loeb (FRA) Daniel Elena (MC) Citroën Xsara WRC Citroën Xsara WRC
2005 Sébastien Loeb (FRA) Daniel Elena (MC) Citroën Xsara WRC Citroën Xsara WRC
2006 Sébastien Loeb (FRA) Daniel Elena (MC) Citroën Xsara WRC Ford Focus RS WRC 06

By Manufacturer
Driver's Titles
1 Lancia 4
1 Mitsubishi 4
1 Peugeot 4
1 Toyota 4
5 Citroën 3
5 Subaru 3
7 Audi 2
7 Ford 2
9 Fiat 1
9 Opel 1

Manufacturer's Titles
1 Lancia 7
2 Peugeot 5
3 Citroën 3
3 Subaru 3
3 Toyota 3
6 Audi 2
6 Ford 2
8 Fiat 1
8 Mitsubishi 1
8 Talbot 1

Total Points
1 Lancia 3601
2 Ford 3007
3 Toyota 2832
4 Subaru 1973
5 Audi 1731
6 Peugeot 1690
7 Mitsubishi 1457
8 Citroën 906
9 Opel 728
10 Renault 591
11 Nissan 554
12 Datsun 484
13 Fiat 477
14 Mazda 464
15 Volkswagen 271
16 Talbot 242
17 Mercedes 203
18 Porsche 174
19 BMW 112
20 Vauxhall 77
21 Skoda 70
22 Saab 61
23 MG 35
24 Alfa Romeo 32
25 Seat 27
26 Daihatsu 26
27 Hyundai 19
28 Ferrari 15
29 Suzuki 11
30 Proton 6
30 Range Rover 6
32 Mini 4
32 Triumph 4
34 Chevrolet 3
34 Dodge 3
34 Lada 3
37 Isuzu 2
38 FSO 1
38 Volvo 1

Total Point Finishes
1 Ford 485
2 Toyota 342
3 Lancia 335
4 Subaru 334
5 Peugeot 266
6 Mitsubishi 252
7 Audi 185
8 Citroën 154
9 Opel 117
10 Renault 110
11 Nissan 91
12 Mazda 72
13 Datsun 59
14 Fiat 55
15 Volkswagen 49
16 Skoda 34
17 Porsche 26
18 Talbot 25
19 BMW 18
19 Mercedes 18
21 Seat 13
21 Vauxhall 13
23 Hyundai 11
24 Daihatsu 8
24 MG 8
26 Alfa Romeo 7
26 Saab 7
28 Suzuki 4
29 Proton 3
30 Dodge 2
30 Lada 2
32 Chevrolet 1
32 Ferrari 1
32 FSO 1
32 Isuzu 1
32 Mini 1
32 Range Rover 1
32 Triumph 1
32 Volvo 1

Total Wins
1 Lancia 59
2 Subaru 47
3 Ford 44
4 Peugeot 43
5 Toyota 41
6 Citroën 34
7 Mitsubishi 32
8 Audi 24
9 Fiat 7
10 Datsun 5
10 Opel 5
10 Renault 5
13 Mazda 3
13 Nissan 3
15 Mercedes 2
15 Talbot 2
17 BMW 1
17 Porsche 1
17 Saab 1
17 Volkswagen 1

Total Podiums
1 Ford 178
2 Lancia 165
3 Toyota 137
4 Peugeot 124
5 Subaru 120
6 Citroën 77
7 Audi 71
7 Mitsubishi 71
9 Fiat 22
10 Opel 18
11 Datsun 17
12 Nissan 13
13 Renault 11
14 Mazda 10
14 Talbot 10
16 Mercedes 9
17 Volkswagen 7
18 Porsche 6
19 BMW 3
19 Seat 3
21 Saab 2
21 Vauxhall 2
23 Alfa Romeo 1
23 Ferrari 1
23 MG 1
23 Skoda 1

By Country
Driver's Titles
1 Finland 13
2 France 4
3 Germany 2
3 Great Britain 2
3 Italy 2
3 Spain 2
3 Sweden 2
8 Norway 1

Manufacturer's Titles
1 France 9
2 Italy 8
3 Japan 7
4 Germany 2
4 Great Britain 2

Total Points
1 Finland 5843
2 France 3656
3 Sweden 2755
4 Italy 1878
5 Spain 1437
6 Great Britain 1353
7 Germany 873
8 Kenya 616
9 Belgium 525
10 Argentina 433
11 Austria 404
12 New Zealand 400
13 Norway 360
14 Japan 210
15 Estonia 207
16 Portugal 190
17 Australia 159
18 Uruguay 122
19 Greece 101
20 Ivory Coast 88
21 Czech Republic 48
21 United States 48
23 Libya 31
24 Brazil 27
25 Monaco 21
25 Qatar 21
27 Canada 15
27 Chile 15
29 Indonesia 14
30 Ireland 13
31 United Arab Emerites 12
32 Switzerland 11
33 Hong Kong 7
34 Uganda 4
35 Cameroon 3
35 Russia 3
35 South Africa 3
38 Denmark 1
38 Malaysia 1
38 Poland 1
38 Saudi Arabia 1
38 Turkey 1

Total Point Finishes
1 Finland 682
2 France 480
3 Sweden 342
4 Italy 240
5 Great Britain 213
6 Spain 188
7 Belgium 117
8 Germany 105
9 Kenya 92
10 New Zealand 89
11 Argentina 83
12 Austria 73
13 Norway 71
14 Japan 47
14 Portugal 47
16 Australia 42
16 Estonia 42
18 Greece 29
19 Uruguay 24
20 Czech Republic 21
21 Ivory Coast 19
22 Monaco 8
22 United States 8
24 Brazil 7
25 Libya 5
25 Switzerland 5
27 Canada 4
27 Chile 4
27 Indonesia 4
30 Qatar 3
30 United Arab Emerites 3
32 Hong Kong 2
32 Ireland 2
32 Russia 2
35 Cameroon 1
35 Denmark 1
35 Malaysia 1
35 Poland 1
35 Saudi Arabia 1
35 South Africa 1
35 Turkey 1
35 Uganda 1

Total Wins
1 Finland 125
2 France 79
3 Great Britain 35
4 Sweden 31
5 Spain 27
6 Italy 21
7 Norway 13
8 Germany 12
9 Estonia 5
9 Kenya 5
11 Austria 2
11 Japan 2
13 Argentina 1
13 Belgium 1
13 Portugal 1

Total Podiums
1 Finland 339
2 France 197
3 Sweden 106
4 Spain 103
5 Great Britain 84
6 Italy 80
7 Germany 40
8 Norway 33
9 Belgium 21
10 Estonia 18
10 Kenya 18
12 Austria 13
12 Argentina 10
14 New Zealand 5
15 Japan 3
15 Uruguay 3
17 Australia 2
17 Portugal 2
17 United States 2
20 Ivory Coast 1

By Co-Driver
Driver's Titles
1 Daniel Elena (MC) 3
1 Seppo Harjanne (FIN) 3
1 Juha Piironen (FIN) 3
4 Christian Geistdörfer (GER) 2
4 Risto Mannisenmäki (FIN) 2
4 Luís Moya (ESP) 2
4 Timo Rautiainen (FIN) 2
4 Tiziano Siviero (ITA) 2
9 Björn Cederberg (SWE) 1
9 Nicky Grist (GBR) 1
9 Arne Hertz (SWE) 1
9 Phil Mills (GBR) 1
9 Bernard Occelli (FRA) 1
9 Robert Reid (GBR) 1
9 David Richard (GBR) 1
9 Derek Ringer (GBR) 1
9 Hans Thorszelius (SWE) 1

By Co-driver Nationality
Driver's Titles
1 Finland 10
2 Great Britain 5
3 Monaco 3
3 Sweden 3
5 Germany 2
5 Italy 2
5 Spain 2
8 France 1

*note this category is based on DRIVER's TITLES, some years, the Co-driver of the World Champion did not win the Co-Driver's Title*