Year	Total
1960	0
1965	0
1970	0
1975	0
1976	0
1977	0
1978	0
1979	0
1980	0
1981	0
1982	0
1983	0
1984	0
1985	0
1986	0
1987	0
1988	0
1989	0
1990	0
1997	16000
1998	25000
1999	30000
2000	35000
2001	41000
2002	45150
2003	49300
2004	64200
2005	80300