Year	Number
1970	757750.1875
1971	788104.1875
1972	820076.1875
1973	846104.6875
1974	866182.8125
1975	882488.625
1976	926063.0625
1977	992683
1978	1102151.5
1979	1173479.5
1980	1231356.375
1981	1312477.25
1982	1356474
1983	1425564.25
1984	1457915.25
1985	1456296.75
1986	1447563.25
1987	1458237.875
1988	1502974.75
1989	1558771
1990	1566573.75
1991	1650100.875
1992	1697178.375
1993	1790220.125
1994	1829381.375
1995	1855199.75
1996	1871151.25
1997	1895891
1998	1960599
1999	1987502.375
2000	2043871.125
2001	2143616.5
2002	2246633.5
2003	2395031.75
2004	2497477.75
2005	2608788
2006	2688266.75
2007	2692564.75
2008	2793615.5
2009	2945268.5
2010	3082980.25
2011	3273283.75
2012	3251505.25
2013	3516536
2014	3705425.75
2015	3867799.25
2016	4028340.5
2017	4187549.75
2018	4379722
2019	4343528
2020	4358085
2021	4540492
2022	4616862.5