Year	Number
1970	16315100
1971	17880500
1972	20169500
1973	25393100
1974	27485700
1975	27281400
1976	29566000
1977	36177400
1978	40554700
1979	45367800
1980	45144500
1981	48061200
1982	46394200
1983	46554000
1984	50452800
1985	51294700
1986	52489800
1987	57757700
1988	62087500
1989	69321696
1990	76223800
1991	78719800
1992	81378400
1993	80063904
1994	83913504
1995	91797000
1996	95913504
1997	94997600
1998	101701200
1999	105994496
2000	109123312
2001	107823469
2002	109037841
2003	103988547
2004	101740600
2005	102279015
2006	102845319
2007	99842338
2008	97022471
2009	86896527
2010	109617020.965748
2011	89788818
2012	98907859
2013	107573000
2014	110547000
2015	114128000
2016	117708000
2017	123898000
2018	126387527
2019	130233352
2020	51131122
2021	45410146