Year	Number
1960	45610
1961	45618
1962	45587
1963	45575
1964	45584
1965	45630
1966	45741
1967	45929
1968	46195
1969	46586
1970	47467
1971	48764
1972	50084
1973	51428
1974	52763
1975	54121
1976	55521
1977	56925
1978	58350
1979	59819
1980	61382
1981	63074
1982	64811
1983	66478
1984	68044
1985	69557
1986	71074
1987	72586
1988	74077
1989	75575
1990	77263
1991	79190
1992	81472
1993	83960
1994	86284
1995	88428
1996	90411
1997	92278
1998	94058
1999	95752
2000	97354
2001	99111
2002	101170
2003	103282
2004	105308
2005	107255
2006	109135
2007	110967
2008	112736
2009	114442
2010	116447
2011	118605
2012	120420
2013	121986
2014	123461
2015	124905
2016	126246
2017	127393
2018	128369
2019	129234
2020	129966
2021	130476
2022	130809
2023	131150