Year	Number
1971	684320.0625
1972	722576.9375
1973	757897.25
1974	781696.9375
1975	813665.5
1976	846163.4375
1977	876283.875
1978	925811.3125
1979	963473
1980	1012417.75
1981	1039367.25
1982	1115884
1983	1186013.25
1984	1267484.625
1985	1294446.375
1986	1350153.75
1987	1451257
1988	1543864.625
1989	1590965.125
1990	1648935.375
1991	1737601.375
1992	1813966
1993	1866303.375
1994	1920652.25
1995	1948986.25
1996	1963259.125
1997	1983539.75
1998	2036668.5
1999	2064473.625
2000	2145188
2001	2248893
2002	2359913
2003	2543727.5
2004	2646695.5
2005	2834731.75
2006	3029160.75
2007	3189606.25
2008	3378749.25
2009	3574973.5
2010	3759738.75
2011	4107898.25
2012	4110374.75
2013	4527484.5
2014	4646636
2015	4918631
2016	5018062
2017	5238671.5
2018	5341204.5
2019	5563658
2020	5773707
2021	5913073
2022	6071115