Year	Number
1960	844968
1961	858353
1962	868179
1963	878052
1964	893566
1965	909940
1966	927741
1967	947895
1968	970694
1969	995513
1970	1020808
1971	1044218
1972	1067318
1973	1091407
1974	1115206
1975	1138919
1976	1162922
1977	1186557
1978	1209359
1979	1231978
1980	1254551
1981	1276657
1982	1294751
1983	1308036
1984	1319521
1985	1329609
1986	1338375
1987	1346010
1988	1352761
1989	1358926
1990	1363943
1991	1362564
1992	1348717
1993	1327245
1994	1312819
1995	1314700
1996	1327037
1997	1336553
1998	1352277
1999	1365012
2000	1373875
2001	1379756
2002	1371831
2003	1378771
2004	1380036
2005	1378879
2006	1377774
2007	1375894
2008	1373275
2009	1369517
2010	1365319
2011	1362938
2012	1359730
2013	1354110
2014	1348093
2015	1341789
2016	1335124
2017	1327422
2018	1317765
2019	1304427
2020	1286177
2021	1270658
2022	1265373
2023	1249318