Year	Number
1970	197700
1971	235600
1972	186200
1973	208800
1974	290900
1975	387600
1976	568000
1977	672400
1978	675300
1979	687800
1980	619900
1981	457000
1982	480600
1983	454000
1984	435000
1985	540000
1986	535000
1987	535000
1988	1113000
1989	1160800
1990	701600
1991	27700
1992	53000
1994	31500
2010	641129
2011	761778.174355453
2012	784944.25303469
2013	476484
2014	476484
2015	2142554
2016	2019816
2017	1591490.01
2018	4812610
2019	5434292
2020	764661
2021	1620013