Year	Number
1970	297277216
1971	307059584
1972	320152224
1973	342532032
1974	357271200
1975	372663968
1976	383868320
1977	392753696
1978	394912960
1979	403958720
1980	414335328
1981	423111808
1982	429984576
1983	434865024
1984	439737824
1985	443171584
1986	446388032
1987	448218720
1988	454499456
1989	461272448
1990	465937952
1991	470659744
1992	476793792
1993	485995840
1994	495526368
1995	502014720
1996	509059744
1997	517017440
1998	522814400
1999	526266912
2000	525353408
2001	521941792
2002	515841344
2003	516808832
2004	535940288
2005	535732032
2006	532518080
2007	537909248
2008	536893120
2009	536009216
2010	536453248
2011	537850496
2012	543064384
2013	547543360
2014	542169216
2015	545871424
2016	558937984
2017	561699840
2018	547633344
2019	553452736
2020	560992064
2021	565419520
2022	577619392