Year	Number
1960	33223
1961	34112
1962	35037
1963	36036
1964	37097
1965	38194
1966	39342
1967	40550
1968	41837
1969	43224
1970	44713
1971	46295
1972	47971
1973	49737
1974	51583
1975	53512
1976	55508
1977	57561
1978	59356
1979	60237
1980	61103
1981	62595
1982	64120
1983	65678
1984	67266
1985	68893
1986	70562
1987	72278
1988	74063
1989	75904
1990	77784
1991	79723
1992	81714
1993	83766
1994	85909
1995	88161
1996	90551
1997	93104
1998	95809
1999	98716
2000	101973
2001	105545
2002	109264
2003	113084
2004	116967
2005	120907
2006	124916
2007	128975
2008	133062
2009	137112
2010	140740
2011	143922
2012	147047
2013	150184
2014	153342
2015	156571
2016	160106
2017	163930
2018	167843
2019	171882
2020	176193
2021	180827
2022	185815
2023	191212