Year	Number
1960	91885
1961	94641
1962	97259
1963	99793
1964	102252
1965	104738
1966	107203
1967	109154
1968	110739
1969	112229
1970	113713
1971	115165
1972	116758
1973	118425
1974	120404
1975	122670
1976	124812
1977	126505
1978	127755
1979	128906
1980	129990
1981	130969
1982	131505
1983	131552
1984	131422
1985	131215
1986	131096
1987	131417
1988	131952
1989	132294
1990	132531
1991	132936
1992	133703
1993	134781
1994	136000
1995	137253
1996	138515
1997	139790
1998	141068
1999	142332
2000	143569
2001	144587
2002	145682
2003	146769
2004	147718
2005	148603
2006	149645
2007	150954
2008	152425
2009	153961
2010	155586
2011	157362
2012	159244
2013	161181
2014	163123
2015	165068
2016	167146
2017	169318
2018	171445
2019	173643
2020	176480
2021	179951
2022	183207
2023	186169