Year	Number
1970	1741368.625
1971	1740287.875
1972	1754117.75
1973	1736634.75
1974	1742890.25
1975	1745118.125
1976	1733542
1977	1743453.25
1978	1741970.5
1979	1730165.375
1980	1717945
1981	1705445.125
1982	1708197.75
1983	1709005.125
1984	1715718.625
1985	1733416.125
1986	1759587
1987	1761245.25
1988	1764209.375
1989	1760870.5
1990	1763632
1991	1782844.625
1992	1780270.25
1993	1816288
1994	1850814.875
1995	1804429.75
1996	1839323.875
1997	1846190.375
1998	1841488.375
1999	1833649.875
2000	1856346
2001	1849337.125
2002	1831556.75
2003	1800837.375
2004	1794989.375
2005	1815034.25
2006	1819279.875
2007	1844863.125
2008	1856541.5
2009	1861289.25
2010	1877282.25
2011	1873261.375
2012	1850770.5
2013	1837031.125
2014	1818845.125
2015	1844957.5
2016	1886296.125
2017	1901432.625
2018	1976935.375
2019	1966222.75
2020	1860137.75
2021	1875806
2022	1861288.625