Year	Number
1960	1274656
1961	1313356
1962	1376944
1963	1421492
1964	1445780
1965	1468835
1966	1462436
1967	1476320
1968	1478807
1969	1466035
1970	1457353
1971	1442048
1972	1424205
1973	1416379
1974	1410585
1975	1384153
1976	1347836
1977	1313536
1978	1282563
1979	1301162
1980	1290037
1981	1287550
1982	1286532
1983	1288340
1984	1283804
1985	1280043
1986	1273422
1987	1256521
1988	1236173
1989	1220021
1990	1197833
1991	1185346
1992	1175225
1993	1174582
1994	1177192
1995	1171966
1996	1198379
1997	1187992
1998	1175002
1999	1158568
2000	1136881
2001	1115033
2002	1093238
2003	1059942
2004	1029670
2005	991015
2006	956212
2007	933110
2008	912906
2009	886895
2010	862053
2011	841228
2012	838844
2013	839503
2014	843256
2015	845726
2016	855552
2017	877795
2018	897932
2019	915083
2020	915942
2021	902447
2022	884516
2023	894421