Year	Number
1960	57886
1961	59428
1962	61029
1963	62691
1964	64419
1965	66217
1966	68079
1967	70017
1968	72035
1969	74127
1970	76294
1971	78542
1972	80875
1973	83288
1974	85774
1975	88346
1976	90995
1977	93710
1978	96396
1979	98771
1980	100740
1981	102609
1982	104557
1983	106585
1984	108691
1985	110859
1986	113090
1987	115362
1988	117677
1989	120048
1990	122644
1991	125292
1992	127995
1993	130731
1994	133468
1995	136210
1996	138961
1997	141727
1998	144506
1999	147355
2000	150446
2001	153779
2002	157183
2003	160581
2004	163971
2005	167361
2006	170777
2007	174257
2008	177839
2009	181478
2010	185410
2011	189574
2012	193857
2013	198280
2014	202820
2015	207436
2016	212238
2017	217206
2018	222159
2019	227104
2020	232127
2021	237230
2022	242389
2023	247615