Year	Number
1960	88692
1961	90479
1962	92200
1963	93883
1964	95539
1965	97192
1966	98876
1967	100514
1968	101919
1969	102850
1970	103376
1971	104176
1972	105668
1973	107264
1974	108740
1975	110124
1976	111169
1977	111929
1978	112746
1979	113820
1980	114986
1981	116274
1982	117826
1983	119310
1984	120485
1985	121361
1986	122170
1987	123490
1988	125443
1989	126980
1990	127908
1991	129318
1992	130906
1993	132254
1994	133400
1995	134080
1996	134750
1997	135817
1998	137243
1999	138853
2000	140748
2001	142645
2002	143855
2003	144829
2004	146269
2005	149173
2006	153876
2007	158725
2008	161475
2009	160997
2010	159964
2011	160180
2012	160900
2013	162375
2014	164245
2015	166216
2016	169141
2017	174307
2018	180210
2019	184880
2020	187982
2021	190942
2022	195800
2023	201745