Year	Number
1960	88690
1961	90548
1962	92220
1963	94149
1964	96748
1965	99612
1966	102070
1967	104156
1968	106541
1969	108721
1970	110825
1971	113301
1972	115824
1973	117991
1974	120075
1975	122096
1976	123633
1977	125173
1978	126445
1979	127268
1980	127528
1981	126686
1982	125108
1983	123851
1984	122849
1985	121658
1986	121646
1987	122798
1988	124142
1989	125780
1990	127381
1991	128683
1992	129666
1993	130507
1994	131338
1995	132272
1996	133595
1997	135207
1998	136163
1999	138174
2000	140769
2001	142267
2002	144460
2003	146839
2004	149095
2005	151167
2006	153431
2007	155336
2008	155690
2009	155482
2010	155288
2011	155892
2012	157661
2013	159687
2014	162019
2015	164539
2016	166769
2017	169012
2018	170880
2019	172840
2020	174957
2021	176342
2022	180009
2023	184340