Year	Number
1960	48975
1961	49356
1962	49814
1963	50222
1964	50658
1965	51135
1966	51572
1967	51960
1968	52302
1969	52608
1970	52860
1971	53480
1972	54733
1973	55977
1974	57196
1975	58377
1976	59532
1977	60838
1978	62859
1979	64917
1980	67067
1981	69334
1982	71669
1983	73701
1984	75561
1985	77592
1986	79709
1987	81855
1988	84105
1989	86566
1990	88970
1991	91327
1992	93631
1993	95920
1994	98174
1995	100362
1996	102559
1997	104495
1998	106370
1999	108290
2000	110290
2001	112306
2002	114311
2003	115159
2004	115318
2005	115425
2006	115453
2007	115207
2008	114563
2009	113641
2010	112616
2011	111570
2012	110452
2013	110653
2014	111216
2015	111804
2016	112326
2017	112909
2018	113584
2019	114201
2020	114805
2021	115331
2022	115865
2023	116482