Year	Number
1960	28918
1961	29921
1962	30961
1963	32008
1964	33075
1965	34191
1966	35333
1967	36499
1968	37687
1969	38893
1970	40118
1971	41364
1972	42633
1973	43922
1974	45229
1975	46554
1976	47901
1977	49264
1978	50618
1979	51909
1980	53059
1981	54163
1982	55347
1983	56618
1984	57982
1985	59417
1986	60921
1987	62471
1988	64054
1989	65654
1990	67315
1991	69064
1992	70857
1993	72666
1994	74428
1995	76129
1996	77746
1997	79267
1998	80711
1999	82091
2000	83314
2001	84468
2002	85643
2003	86746
2004	87799
2005	88819
2006	89843
2007	90945
2008	92196
2009	93571
2010	95440
2011	97900
2012	100586
2013	103448
2014	106454
2015	109513
2016	112552
2017	115550
2018	118457
2019	121247
2020	123918
2021	126428
2022	128713
2023	130726