Year	Number
1960	41724
1961	42175
1962	43127
1963	44579
1964	46136
1965	47775
1966	49476
1967	51206
1968	52897
1969	54485
1970	54905
1971	54382
1972	54145
1973	54115
1974	54241
1975	54497
1976	54858
1977	55299
1978	55797
1979	56330
1980	56593
1981	56338
1982	56457
1983	57299
1984	58388
1985	59734
1986	61311
1987	63092
1988	65272
1989	67673
1990	70165
1991	72969
1992	76034
1993	80081
1994	85178
1995	90709
1996	96723
1997	103167
1998	109934
1999	116982
2000	124307
2001	131833
2002	139461
2003	147167
2004	154931
2005	162813
2006	170872
2007	176105
2008	178378
2009	180566
2010	182797
2011	185009
2012	187006
2013	188847
2014	190746
2015	193152
2016	196492
2017	200566
2018	204522
2019	206940
2020	207450
2021	207284
2022	208011
2023	211327