Year	Number
1960	269875
1961	281619
1962	293682
1963	304775
1964	315250
1965	326355
1966	336954
1967	347526
1968	358446
1969	368869
1970	379718
1971	391601
1972	403505
1973	416658
1974	431363
1975	447461
1976	463238
1977	479643
1978	498254
1979	515991
1980	533120
1981	551814
1982	571678
1983	590956
1984	610678
1985	633048
1986	658226
1987	686106
1988	716701
1989	751140
1990	789160
1991	831127
1992	877557
1993	925216
1994	972130
1995	1017200
1996	1059993
1997	1102229
1998	1143539
1999	1183543
2000	1225549
2001	1268831
2002	1311812
2003	1354189
2004	1395616
2005	1437537
2006	1480619
2007	1523183
2008	1567518
2009	1616305
2010	1665083
2011	1716356
2012	1772512
2013	1834058
2014	1900863
2015	1972266
2016	2050113
2017	2132971
2018	2219439
2019	2308615
2020	2392386
2021	2471958
2022	2554579
2023	2644294