Year	Number
1960	66030
1961	67902
1962	69854
1963	71936
1964	74126
1965	76399
1966	78781
1967	81247
1968	83738
1969	86260
1970	87989
1971	88879
1972	89812
1973	90776
1974	91652
1975	82169
1976	69612
1977	67302
1978	67812
1979	68789
1980	70772
1981	73125
1982	75549
1983	78097
1984	80792
1985	83616
1986	86603
1987	89859
1988	93327
1989	96842
1990	100447
1991	104188
1992	108182
1993	112494
1994	116943
1995	121432
1996	125920
1997	130424
1998	135025
1999	139701
2000	144437
2001	149303
2002	154302
2003	159430
2004	164931
2005	170721
2006	176577
2007	182592
2008	188862
2009	195523
2010	202494
2011	209749
2012	217504
2013	226103
2014	236446
2015	248552
2016	261920
2017	277015
2018	294228
2019	313898
2020	335894
2021	358848
2022	383348
2023	412283