Year	Number
1960	58620
1961	61178
1962	63903
1963	66743
1964	69642
1965	72644
1966	75838
1967	79239
1968	82843
1969	86454
1970	89517
1971	92017
1972	94339
1973	96532
1974	98646
1975	100706
1976	102791
1977	104968
1978	107168
1979	109348
1980	111501
1981	113748
1982	116151
1983	118643
1984	121216
1985	123900
1986	126663
1987	129422
1988	132161
1989	134958
1990	137614
1991	140316
1992	143416
1993	146638
1994	149688
1995	152605
1996	155441
1997	158215
1998	160986
1999	163570
2000	166136
2001	168662
2002	171053
2003	173516
2004	176046
2005	178628
2006	181302
2007	184090
2008	186970
2009	189903
2010	192834
2011	195497
2012	197810
2013	199843
2014	201821
2015	203844
2016	205736
2017	207529
2018	209250
2019	210821
2020	211965
2021	212878
2022	214167
2023	215761