1949
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965 |
500
500
500
600
600
710
714
745
780
800
810
1,168
1,174
1,165
1,151
1,249
1,237 |
16,000
15,000
14,000
13,000
14,000
13,000
13,000
14,000
15,000
14,000
14,000
17,000
13,000
13,637
12,233
12,498
11,439 |
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
1982 |
1,274
1,294
1,272
1,370
1,378
1,394
1,455
1,551
2,042
2,042
2,048
3,050
2,530
3,082
3,047
3,177
3,182 |
10,332
12,400
10,078
10,338
15,209
15,422
16,068
15,900
16,100
17,231
14,700
17,900
16,000
15,000
14,900
15,100
15,150 |