Year	Number
1960	540739
1961	556607
1962	574778
1963	593221
1964	613569
1965	634695
1966	656053
1967	677270
1968	696691
1969	713963
1970	724571
1971	734783
1972	751702
1973	769128
1974	785405
1975	801089
1976	815884
1977	828948
1978	840680
1979	849491
1980	845458
1981	827379
1982	804359
1983	779073
1984	762244
1985	761267
1986	768469
1987	778719
1988	790931
1989	801792
1990	808038
1991	813300
1992	821218
1993	828988
1994	836046
1995	843693
1996	851624
1997	858487
1998	863574
1999	866763
2000	867402
2001	865881
2002	864690
2003	864962
2004	867883
2005	875324
2006	886879
2007	903050
2008	925309
2009	948573
2010	967896
2011	993340
2012	1027022
2013	1058831
2014	1088387
2015	1117000
2016	1145404
2017	1174237
2018	1201493
2019	1227389
2020	1250149
2021	1244884
2022	1277210
2023	1310323