1975

20,886,680

   204,274

  4,856

23.25

2.38

*

*

*

1976

22,794,702

   233,382

  5,438

23.86

2.33

*

*

*

1977

24,432,701

   257,108

  5,976

24.46

2.32

*

*

*

1978

27,285,497

   289,463

  6,745

24.72

2.33

*

*

*

1979

28,932,820

   293,840

  7,178

24.81

2.44

*

*

*

1980

30,060,754

   295,475

  7,486

24.90

2.53

*

*

*

1981

31,236,287

   307,583

  7,081

22.67

2.30

*

*

*

1982

32,307,692

   322,026

  6,359

19.68

1.97

*

*

*

1983

33,068,138

   334,937

  6,202

18.76

1.85

*

*

*

1984

35,257,788

   358,588

  6,496

18.42

1.81

*

*

*

1985

37,665,180

   388,779

  6,689

17.76

1.72

*

*

*

1986

39,763,446

   416,532

  7,317

18.40

1.76

*

*

*

1987

41,695,017

   444,392

  8,058

19.33

1.81

*

*

*

1988

44,599,500

   488,431

  8,306

18.62

1.70

478,000

1,071

98

1989

47,134,148

   522,483

  8,551

18.14

1.64

511,000

1,084

98

1990

49,916,497

   555,659

  8,601

17.23

1.55

505,000

1,012

91

1991

52,062,064

   595,924

  8,391

16.12

1.41

563,000

1,081

94

1992

53,836,046

   642,397

  8,098

15.04

1.26

545,000

1,012

85

1993

56,573,835

   675,353

  8,511

15.04

1.26

601,000

1,062

89

1994

59,485,995

   711,515

  8,904

14.97

1.25

631,000

1,061

89

1995

62,520,872

   749,971

  9,568

15.30

1.28

722,000

1,156

96

1996

65,438,877

   787,255

  9,932

15.18

1.26

761,000

1,164

97

1997

67,287,470

   824,896

10,249

15.23

1.24

755,000

1,122

92

1998

69,783,500

   861,951

10,705

15.34

1.24

763,000

1,093

88

1999

73,143,777

   903,314

11,265

15.40

1.25

847,000

1,158

94

2000

76,173,062

   942,611

11,526

15.13

1.22

887,000

1,164

94

2001

78,845,571

   976,096

11,723

14.87

1.20

861,000

1,091

88

2002

81,795,850

1,012,648

12,274

15.01

1.21

879,000

1,075

87

2003

85,179,665

1,043,936

12,546

14.73

1.20

889,000

1,044

85

2004

89,938,581

1,095,685

12,602

14.01

1.15

900,000

1,001

82