Year	Number
1970	187964160
1971	197777600
1972	209594928
1973	220390960
1974	226406480
1975	234053440
1976	248001216
1977	267398528
1978	281633664
1979	283127488
1980	285369696
1981	286293440
1982	285867008
1983	290080224
1984	296303072
1985	304810880
1986	314140288
1987	321926400
1988	326276960
1989	327448352
1990	331510432
1991	339631872
1992	349352928
1993	361304832
1994	371873696
1995	383461888
1996	396194624
1997	408710816
1998	420564800
1999	430705664
2000	444144416
2001	456700960
2002	477595520
2003	490595680
2004	501617664
2005	509434912
2006	511267264
2007	523260992
2008	531397120
2009	535264192
2010	545641216
2011	554186240
2012	561100928
2013	572955392
2014	580271040
2015	582885504
2016	587015552
2017	589067136
2018	598611136
2019	604695232
2020	616729344
2021	629292096
2022	639610432