Year	Number
1960	88189
1961	90977
1962	94202
1963	97834
1964	101842
1965	106178
1966	110809
1967	115774
1968	121090
1969	126642
1970	132334
1971	137678
1972	142450
1973	147520
1974	152990
1975	158717
1976	164776
1977	170817
1978	176525
1979	181426
1980	185399
1981	189020
1982	192629
1983	196040
1984	199378
1985	202773
1986	206153
1987	209604
1988	213033
1989	216193
1990	219004
1991	221578
1992	224081
1993	226273
1994	227737
1995	227089
1996	226109
1997	225410
1998	224510
1999	223935
2000	222614
2001	220674
2002	218690
2003	216641
2004	214002
2005	211276
2006	208797
2007	206716
2008	205123
2009	204369
2010	204783
2011	206501
2012	210020
2013	215931
2014	225099
2015	235863
2016	247668
2017	260808
2018	273891
2019	287457
2020	300434
2021	311683
2022	323558
2023	337043