1961-1965

18,526

24.9

6,312

8.5

12,213

16.4

1966

15,220

20.1

6,478

8.6

8,742

11.6

1967

14,312

18.8

6,638

8.7

7,674

10.1

1968

13,774

18.0

6,610

8.7

7,164

9.4

1969

13,618

17.7

6,663

8.7

6,955

9.1

1970

14,159

18.4

6,723

8.7

7,436

9.6

1971

14,250

18.1

6,682

8.5

7,568

9.6

1972

13,536

17.0

6,904

8.7

6,632

8.3

1973

13,289

16.6

6,928

8.6

6,361

7.9

1974

12,941

16.0

6,899

8.5

6,042

7.5

1975

13,119

16.1

6,794

8.3

6,325

7.8

1976

12,821

15.5

6,955

8.4

5,866

7.1

1977

12,374

14.8

6,963

8.3

5,411

6.5

1978

12,548

14.9

6,877

8.1

5,671

6.7

1979

12,406

14.6

6,843

8.0

5,563

6.5

1980

12,369

14.6

7,004

8.2

5,365

6.3

1981

12,079

14.2

6,958

8.2

5,121

6.0

1982

12,325

14.5

6,941

8.1

5,384

6.3

1983

12,401

14.5

7,047

8.2

5,354

6.2

1984

12,378

14.4

6,913

8.0

5,465

6.3

1985

12,450

14.4

7,315

9.6

5,135

5.9

1986

12,358

14.2

7,255

8.3

5,103

5.8

1987

12,110

13.8

7,112

8.1

4,998

5.7

1988

12,182

13.8

7,412

8.3

4,770

5.4

1989

12,533

14.1

7,516

8.5

5,017

5.6

1990

12,870

14.4

7,388

8.3

5,482

6.1

1991

12,016

13.4

7,255

8.1

4,822

5.4

1992

11,874

13.1

7,544

8.3

4,330

4.8

1993

11,568

12.7

7,559

8.3

4,009

4.4

1994

11,099

12.1

7,770

8.5

3,329

3.6

1995

10,726

11.6

7,687

8.3

3,039

3.3

1996

10,573

11.4

7,751

8.4

2,822

3.0

1997

9,952

10.6

8,044

8.6

1,908

2.0

1998

9,448

10.1

7,995

8.6

1,453

1.6

1999

9,427

10.0

7,568

8.1

1,859

2.0