Year	Number
1960	57548
1961	62704
1962	68329
1963	73563
1964	79206
1965	85264
1966	91795
1967	99986
1968	108920
1969	118624
1970	129209
1971	140737
1972	153313
1973	166973
1974	181871
1975	198099
1976	215800
1977	235027
1978	250032
1979	262031.99999999997
1980	274625
1981	287786
1982	301598
1983	316072
1984	331262
1985	347138
1986	363798
1987	381257
1988	399552
1989	418439
1990	438246
1991	458991
1992	480749
1993	503474
1994	527307
1995	552268
1996	578447
1997	605790
1998	634466
1999	664500
2000	695999
2001	727546
2002	749785
2003	772704
2004	796357
2005	820665
2006	845751
2007	871603
2008	898283
2009	925702
2010	953998
2011	983159
2012	1013254
2013	1044183
2014	1076101
2015	1108994
2016	1142940
2017	1177828
2018	1213781
2019	1251511
2020	1291848
2021	1335700
2022	1383909
2023	1437233