Year	Number
1970	3218106
1973	2576075
1976	2618639
1977	2647803
1978	2788313
1981	2993555
1983	3430882
1984	3269210
1985	3422231
1986	3520147
1987	3645795
1988	2774124
1989	2849846
1990	2639660
2005	92629
2006	74014
2008	645381
2009	388677
2010	557327