Year	Number
1960	91640
1961	91951
1962	92557
1963	92676
1964	93329
1965	94198
1966	95708
1967	97648
1968	98907
1969	100123
1970	101955
1971	104094
1972	106628
1973	109322
1974	112229
1975	115501
1976	118174
1977	120876
1978	123908
1979	126310
1980	128600
1981	130760
1982	133215
1983	135480
1984	137226
1985	139634
1986	141793
1987	144977
1988	147654
1989	151210
1990	154958
1991	165159
1992	169530
1993	173533
1994	177494
1995	181185
1996	184846
1997	188160
1998	191210
1999	193830
2000	196906
2001	199782
2002	203936
2003	208738
2004	213881
2005	220199
2006	228041
2007	235025
2008	241260
2009	248235
2010	256563
2011	265863
2012	276631
2013	288179
2014	299698
2015	310155
2016	321116
2017	331707
2018	342358
2019	354471
2020	370564
2021	380661
2022	390268
2023	408525