Year	Number
1960	779985
1961	791673
1962	802711
1963	813835
1964	825644
1965	837766
1966	849896
1967	861995
1968	873995
1969	886340
1970	899653
1971	913601
1972	928069
1973	943083
1974	957938
1975	972163
1976	985537
1977	998565
1978	1011766
1979	1025528
1980	1040458
1981	1056703
1982	1073917
1983	1091294
1984	1107696
1985	1122274
1986	1134719
1987	1145386
1988	1155138
1989	1164834
1990	1174572
1991	1184934
1992	1197146
1993	1210637
1994	1224386
1995	1238101
1996	1250847
1997	1262747
1998	1274354
1999	1284878
2000	1293403
2001	1300463
2002	1307197
2003	1313748
2004	1320251
2005	1326570
2006	1332880
2007	1338676
2008	1343912
2009	1349628
2010	1355508
2011	1361767
2012	1368899
2013	1376070
2014	1382315
2015	1387628
2016	1391829
2017	1394537
2018	1396014
2019	1396657
2020	1399668
2021	1402951
2022	1402379
2023	1401001