1975

4,964,070

  5,629

3,189

64.24

56.65

*

*

*

1976

4,933,332

  6,003

3,312

67.14

55.17

*

*

*

1977

4,933,256

  6,349

4,104

83.19

64.64

*

*

*

1978

4,867,855

  7,158

4,577

94.02

63.94

*

*

*

1979

5,422,132

  8,637

4,894

90.26

56.66

*

*

*

1980

5,693,940

10,214

5,144

90.34

50.36

*

*

*

1981

5,831,132

10,690

4,906

84.13

45.89

*

*

*

1982

5,753,858

  9,910

4,453

77.39

44.93

*

*

*

1983

5,585,112

  8,760

4,265

76.36

48.69

*

*

*

1984

5,479,822

  8,784

4,608

84.09

52.46

*

*

*

1985

5,444,404

  9,086

4,564

83.83

50.23

*

*

*

1986

5,198,993

  9,397

4,566

87.82

48.59

*

*

*

1987

4,885,772

  9,506

4,036

82.61

42.46

*

*

*

1988

4,584,284

10,024

3,662

79.88

36.53

105,000

2,294

1,049

1989

4,420,420

10,371

3,141

71.06

30.29

  83,000

1,888

   805

1990

4,259,462

  9,557

3,244

76.16

33.94

  84,000

1,979

   882

1991

4,177,365

  9,178

2,806

67.17

30.57

  80,000

1,925

   876

1992

4,065,118

  9,557

2,395

58.92

25.06

  65,000

1,601

   681

1993

3,977,856

  9,906

2,449

61.57

24.72

  59,000

1,494

   600

1994

3,756,555

10,240

2,320

61.76

22.66

  57,000

1,528

   561

1995

3,897,191

  9,797

2,227

57.14

22.73

  57,000

1,475

   587

1996

3,871,599

  9,920

2,161

55.82

21.78

  55,000

1,428

   557

1997

3,826,373

10,081

2,116

55.30

20.99

  53,000

1,374

   522

1998

3,879,450

10,283

2,294

59.13

22.31

  49,000

1,262

   476

1999

4,152,433

10,584

2,483

59.80

23.46

  50,000

1,204

   472

2000

4,346,068

10,469

2,897

66.66

27.67

  58,000

1,328

   551

2001

4,903,056

  9,639

3,197

65.20

33.17

  60,000

1,229

   625

2002

5,004,156

  9,552

3,270

65.35

34.23

  65,000

1,293

   677

2003

5,370,035

   9,539

3,661

68.17

38.38

  67,000

1,250

   703