Year	Number
1973	704591.25
1974	710817.125
1975	721611.6875
1976	723598
1977	729800.5
1978	741369.625
1979	761589.5
1980	781500.8125
1981	802828.75
1982	855324
1983	889381.8125
1984	936692.75
1985	948654.5625
1986	989079.9375
1987	1040880.0625
1988	1095237.625
1989	1121209.125
1990	1131036
1991	1157656.375
1992	1175124.875
1993	1200217.25
1994	1229322.375
1995	1251091.875
1996	1264880.5
1997	1278637.375
1998	1288539.75
1999	1301055
2000	1350466.625
2001	1425799.875
2002	1496679.625
2003	1611124.375
2004	1624784.5
2005	1675176.375
2006	1796771.5
2007	1886656.625
2008	2043179.75
2009	2163224
2010	2286468.5
2011	2614065
2012	2567702.75
2013	2873326
2014	2820944
2015	2948196
2016	3021374.5
2017	3154797
2018	3250990
2019	3398454
2020	3544254.25
2021	3691288.25
2022	3805592.5