Year	Number
1971	1117184
1972	1147195.75
1973	1173497.875
1974	1193768
1975	1211658.125
1976	1226623.375
1977	1238008
1978	1238828.125
1979	1154600
1980	1308544
1981	1283278.875
1982	1314006.375
1983	1304886.25
1984	1323503.625
1985	1326632.375
1986	1338410.625
1987	1346818.375
1988	1344892.25
1989	1336107.625
1990	1339511.5
1991	1364111
1992	1422700.5
1993	1455938.125
1994	1477572.75
1995	1503053.5
1996	1527751
1997	1566393.375
1998	1601278.625
1999	1638154
2000	1657850.875
2001	1676710.75
2002	1701266.5
2003	1738979.25
2004	1764816.125
2005	1786619.25
2006	1806715.875
2007	1818388.375
2008	1822394.875
2009	1810557.75
2010	1796368.5
2011	1780620.75
2012	1782243.5
2013	1783901.75
2014	1780985.25
2015	1802537.75
2016	1824068.625
2017	1836715.375
2018	1867374.5
2019	1847174.75
2020	1876150.875
2021	1868498.75
2022	1970175.375