Year	Number
1971	260944.609375
1972	272616.25
1973	284901.875
1974	291532.59375
1975	302132.65625
1976	311278.375
1977	324643.28125
1978	342769.71875
1979	365016.875
1980	392245.96875
1981	401009.15625
1982	415696.4375
1983	441336.46875
1984	465639.3125
1985	472844.125
1986	492718.90625
1987	512456.78125
1988	551281.5
1989	577396.9375
1990	592930.8125
1991	633755.25
1992	656252.3125
1993	690983.0625
1994	723803.8125
1995	761729.0625
1996	786024.625
1997	799455
1998	838822.0625
1999	871615.9375
2000	923875.1875
2001	990069.1875
2002	1069469
2003	1148227.25
2004	1232661.75
2005	1335812.375
2006	1393038.625
2007	1478711
2008	1534480.375
2009	1668678.125
2010	1786937.5
2011	1853527
2012	1948770.875
2013	2090717
2014	2190452.5
2015	2342791.5
2016	2508437.25
2017	2595878.75
2018	2599274.5
2019	2724373.75
2020	2840486.25
2021	2915604