Year	Number
1970	219046.03125
1971	227369.375
1972	234509.84375
1973	238260.296875
1974	241824.46875
1975	248080.25
1976	244034.8125
1977	244717.15625
1978	245228.078125
1979	244519.484375
1980	245655.84375
1981	244485.8125
1982	245942.390625
1983	251584.3125
1984	258038.625
1985	264036.34375
1986	269491
1987	274480.1875
1988	280705.15625
1989	286364.40625
1990	289879.78125
1991	294003.84375
1992	299665.5
1993	308186.4375
1994	312065.71875
1995	313746.34375
1996	302766.9375
1997	314542.40625
1998	311642.34375
1999	302689.125
2000	302521.3125
2001	310377.34375
2002	314700.75
2003	318851.78125
2004	320564.40625
2005	321105.375
2006	322364.5
2007	318490.90625
2008	321286.0625
2009	322327.15625
2010	330037.46875
2011	332422.21875
2012	333905.21875
2013	340626.03125
2014	345744
2015	350556.90625
2016	358265.6875
2017	366511.21875
2018	370362.03125
2019	378191.1875
2020	376595.15625
2021	381658.3125