Year	Number
1970	1132583.25
1971	1148971.625
1972	1180674.625
1973	1174929.25
1974	1189137.875
1975	1192214.625
1976	1186088.125
1977	1191978.125
1978	1189480.875
1979	1183599
1980	1175249.25
1981	1159485.375
1982	1144241.375
1983	1126606.375
1984	1117171.625
1985	1124580.5
1986	1147585.125
1987	1145541.75
1988	1151767
1989	1147796.625
1990	1153555.375
1991	1173332.875
1992	1168078.25
1993	1186096.625
1994	1225696.875
1995	1196440.375
1996	1232969.875
1997	1236790.25
1998	1233332.125
1999	1241252.875
2000	1272022
2001	1277155.125
2002	1288650.375
2003	1285003.875
2004	1286557.125
2005	1314540.125
2006	1328758.625
2007	1361470.5
2008	1371808.125
2009	1379238
2010	1398200.5
2011	1414910.625
2012	1395224.875
2013	1379967.625
2014	1361518.875
2015	1374301.75
2016	1402962.5
2017	1413594.625
2018	1429032.875
2019	1446646
2020	1458914
2021	1478316.5
2022	1465882.75