Year	Number
1970	746980.0625
1971	795667.0625
1972	895896
1973	962295.6875
1974	1126265.875
1975	1186763.25
1976	1291517
1977	1384011.375
1978	1421414
1979	1463594.875
1980	1484856
1981	1517314.125
1982	1558907.125
1983	1594511.125
1984	1641636
1985	1688596.25
1986	1762903.875
1987	1836298.875
1988	1891229.25
1989	1934659.25
1990	1975871.5
1991	2024095
1992	2073672
1993	2104433.5
1994	2171213.25
1995	2231024.75
1996	2316375.5
1997	2350224.5
1998	2495008.25
1999	2589687.25
2000	2628950
2001	2585828.25
2002	3029767.5
2003	3164872.75
2004	3280677.5
2005	3364888.5
2006	3022976.75
2007	3138558.5
2008	3325532
2009	3377729
2010	3461123.5
2011	3528072
2012	3574867.25
2013	3642802.75
2014	3790400.5
2015	3806347
2016	3837606.75
2017	3822996.25
2018	3859961.75
2019	3906260.25
2020	3912638.25
2021	3955007
2022	4019988.25