- 19766,011
- 1977 to 19798,339
- 1980 to 19813,546
- 1982 to 19844,515
- 1985 to 19865,098
- 1987 to 19894,655
- 1990 to 19911,947
- 1992 to 19943,755
- 1995 to 19963,457
- 1997 to 19993,011
- 2000 to 20011,577
- 2002456
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