Year	Number
1960	2678740
1961	2847651
1962	2973833
1963	3077862
1964	3185681
1965	3296964
1966	3412296
1967	3531663
1968	3655378
1969	3783069
1970	3915406
1971	4052372
1972	4223963
1973	4411693
1974	4608043
1975	4813132
1976	5027651
1977	5251100
1978	5484810
1979	5728921
1980	5984256
1981	6197327
1982	6390985
1983	6590694
1984	6796932
1985	7009030
1986	7228052
1987	7453919
1988	7687169
1989	7927047
1990	8174756
1991	8268168
1992	8281576.999999999
1993	8294969.999999999
1994	8308403
1995	8321858
1996	8335353.999999999
1997	8348834.000000001
1998	8362355
1999	8375897.000000001
2000	8389759
2001	8506081
2002	8624180
2003	8743919
2004	8865488
2005	8988406
2006	9113202
2007	9239730
2008	9368193
2009	9498081
2010	9625579
2011	9732728
2012	9841221
2013	9950619
2014	10061387
2015	10173388
2016	10286636
2017	10401144
2018	10516927
2019	10638689
2020	10770487
2021	10915364
2022	11074811
2023	11248839