1972

22,601

1,175

1973

30,449

1,720

1974

43,087

2,826

1975

32,486

2,935

1976

31,116

2,431

21,016

1977

32,996

2,754*

25,414

1978

37,611

743*

38,274

1979

41,501

992*

55,624

1980

25,574

1,663*

38,183

1981

13,447

360*

27,767

8,355

1982

6,080

23,820

7,750

1983

3,085

37,673

5,405

1984

42,644

4,130

1985

43,315

2,015

1986

25,929

128