Year	Number
1960	53633
1961	55027
1962	56694
1963	58559
1964	60629
1965	62912
1966	65354
1967	67959
1968	70670
1969	73391
1970	76094
1971	78750
1972	81313
1973	83789
1974	86214
1975	88586
1976	90896
1977	93142
1978	95292
1979	97298
1980	99166
1981	100916
1982	102535
1983	104038
1984	105451
1985	106765
1986	107987
1987	109164
1988	110324
1989	111417
1990	112449
1991	113448
1992	114424
1993	115498
1994	116815
1995	118451
1996	120391
1997	122601
1998	125119
1999	128026
2000	131283
2001	134843
2002	138746
2003	142952
2004	147184
2005	151394
2006	155680
2007	160024
2008	164476
2009	169032
2010	171653
2011	174153
2012	178355
2013	181915
2014	185428
2015	189655
2016	194305
2017	199340
2018	204809
2019	210633
2020	216191
2021	221052
2022	225782
2023	231271