Year	Number
1960	89167
1961	89034
1962	88893
1963	88285
1964	87987
1965	87908
1966	86664
1967	85054
1968	83818
1969	82705
1970	81708
1971	81855
1972	83073
1973	85025
1974	87641
1975	90327
1976	93102
1977	96034
1978	99150
1979	102355
1980	105682
1981	109162
1982	112748
1983	116159
1984	119145
1985	122029
1986	125100
1987	126799
1988	120798
1989	114583
1990	116153
1991	119550
1992	122046
1993	123564
1994	127169
1995	131810
1996	135375
1997	139410
1998	140736
1999	143099
2000	149886
2001	156959
2002	164183
2003	171787
2004	180011
2005	188891
2006	198481
2007	208821
2008	219729
2009	230686
2010	243782
2011	257918
2012	270232
2013	280807
2014	283739
2015	284088
2016	283501
2017	278593
2018	278711
2019	286815
2020	297038
2021	305984
2022	315423
2023	326196