Year	Number
1960	65835
1961	65375
1962	64999
1963	64724
1964	64621
1965	64709
1966	64952
1967	65338
1968	65839
1969	66426
1970	67060
1971	67720
1972	68426
1973	69155
1974	69877
1975	70591
1976	71331
1977	72087
1978	72822
1979	73505
1980	74135
1981	74741
1982	75327
1983	75891
1984	76424
1985	76996
1986	77652
1987	78368
1988	79179
1989	80075
1990	81023
1991	82018
1992	83060
1993	85279
1994	86979
1995	87436
1996	88625
1997	90289
1998	92147
1999	94107
2000	96180
2001	98373
2002	100709
2003	103207
2004	105960
2005	109088
2006	112319
2007	115711
2008	119500
2009	123466
2010	127580
2011	131707
2012	135617
2013	139038
2014	141410
2015	144890
2016	150255
2017	155788
2018	161568
2019	167618
2020	173175
2021	177860
2022	182480
2023	188081