Year	Number
1970	276971872
1971	285836384
1972	296185184
1973	315583328
1974	328273504
1975	341770528
1976	351489024
1977	358256768
1978	357431296
1979	362647616
1980	370338816
1981	375813504
1982	379391872
1983	381864032
1984	385705824
1985	389071104
1986	392728864
1987	393780352
1988	397544992
1989	402514176
1990	405194560
1991	407071424
1992	410106592
1993	416378016
1994	423829664
1995	429473120
1996	435969312
1997	441084320
1998	444250080
1999	445131872
2000	440498752
2001	435200928
2002	425714528
2003	422676032
2004	437813056
2005	433915392
2006	428824704
2007	432654336
2008	431729408
2009	428066080
2010	425605920
2011	424197440
2012	426728864
2013	429673760
2014	422747424
2015	424981184
2016	435537408
2017	435824928
2018	418098688
2019	420893216
2020	425454656
2021	428916864
2022	439544224