- 1952 to 19547,472
- 1955 to 19598,226
- 1960 to 196413,878
- 1965 to 196915,850
- 1970 to 19749,897
- 1975 to 19799,589
- 1980 to 19846,803
- 1985 to 19898,657
- 1990 to 19945,127
- 19952,245
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