Year	Number
1960	1813686
1961	1869311
1962	1929349
1963	1991316
1964	2055362.9999999998
1965	2121284
1966	2189416
1967	2259735
1968	2332415
1969	2407223
1970	2484538
1971	2553503
1972	2598482
1973	2644126
1974	2690636
1975	2737965
1976	2786192
1977	2835134
1978	2885004
1979	2935751
1980	2987463
1981	3028415
1982	3032969
1983	3037530
1984	3042104
1985	3046672
1986	3051253
1987	3055841
1988	3060443
1989	3065038
1990	3069647
1991	3076196
1992	3087513
1993	3098841
1994	3110226
1995	3121652
1996	3133137
1997	3144631
1998	3156184
1999	3167780
2000	3179434
2001	3187197
2002	3185330
2003	3183464
2004	3181597
2005	3179736
2006	3177873
2007	3176011
2008	3174148
2009	3172292
2010	3170434
2011	3168576
2012	3166719
2013	3164863
2014	3163009
2015	3161155
2016	3159302
2017	3157451
2018	3155600
2019	3154152
2020	3153355
2021	3153255
2022	3153781
2023	3154463