Year	Number
1960	127652
1961	130043
1962	132325
1963	135017
1964	138761
1965	142849
1966	146385
1967	149741
1968	153581
1969	156992
1970	160120
1971	163779
1972	167572
1973	170721
1974	173712
1975	176583
1976	178847
1977	181216
1978	183114
1979	184309
1980	184598
1981	183076
1982	180343
1983	178395
1984	176966
1985	175061
1986	174800
1987	176178
1988	177956
1989	180283
1990	182540
1991	184784
1992	187337
1993	189717
1994	191770
1995	194109
1996	197053
1997	200319
1998	202458
1999	205438
2000	209313
2001	212029
2002	215630
2003	219467
2004	223095
2005	226370
2006	229869
2007	232759
2008	233130
2009	232621
2010	232245
2011	233272
2012	236282
2013	239863
2014	244011
2015	248474
2016	252443
2017	256486
2018	260166
2019	264082
2020	268313
2021	271129
2022	277581
2023	285604