Year	Number
1960	812060
1961	877518
1962	931165
1963	978752
1964	1025855
1965	1065581
1966	1101035
1967	1130583
1968	1154062
1969	1172943
1970	1186070
1971	1195229
1972	1199202
1973	1197228
1974	1190840
1975	1180068
1976	1155502
1977	1120025
1978	1087336
1979	1069822
1980	1067363
1981	1069276
1982	1076981
1983	1088663
1984	1105192
1985	1125033
1986	1147513
1987	1174310
1988	1201607
1989	1234119
1990	1264289
1991	1287436
1992	1311241
1993	1331739
1994	1340530
1995	1338306
1996	1330616
1997	1318980
1998	1303827
1999	1286174
2000	1265508
2001	1240221
2002	1213040
2003	1186342
2004	1162048
2005	1141657
2006	1126613
2007	1117310
2008	1123359
2009	1134035
2010	1140452
2011	1154708
2012	1176089
2013	1201782
2014	1229048
2015	1255743
2016	1279648
2017	1295856
2018	1303840
2019	1307978
2020	1306198
2021	1294853
2022	1270234
2023	1235257