Year	Number
1970	4946632
1973	3090359
1976	2707861
1977	3380525
1978	3658071
1981	4609856
1983	5066638
1984	5275212
1985	5559006
1986	5768195
1987	6006236
1988	4684775
1989	4853146
1990	4566339
2005	548083
2006	588816
2008	1437189
2009	1388483
2010	1386843
2017	407072.1875
2018	72080.7265625