Year	Number
1960	1975084
1961	2016791
1962	2058246
1963	2102546
1964	2149825
1965	2198138
1966	2250184
1967	2310296
1968	2377468
1969	2446824
1970	2512827
1971	2575456
1972	2629989
1973	2677228
1974	2729193
1975	2785804
1976	2853041
1977	2946064
1978	3058169
1979	3172118
1980	3285038
1981	3389633
1982	3489585
1983	3601615
1984	3726157
1985	3830854
1986	3943027
1987	4070946
1988	4182125
1989	4314294
1990	4393842
1991	4466287
1992	4629152
1993	4887214
1994	5155907
1995	5362673
1996	5569033
1997	5776447
1998	5992009
1999	6221258
2000	6462727
2001	6702640
2002	6953643
2003	7199079
2004	7435566
2005	7688868
2006	7775507
2007	7740771
2008	7929571
2009	8266559
2010	8577908
2011	8919801
2012	9365183
2013	9853023
2014	10249906
2015	10588815
2016	10912579
2017	11234222
2018	11581057
2019	11939220
2020	12311784
2021	12686734
2022	13068184
2023	13473714