Year	Number
1960	94680
1961	95211
1962	95765
1963	96560
1964	97459
1965	99004
1966	101337
1967	103717
1968	106122
1969	108518
1970	110882
1971	113191
1972	115421
1973	117537
1974	119209
1975	121780
1976	125605
1977	129124
1978	131779
1979	133454
1980	134842
1981	135773
1982	136329
1983	137354
1984	139077
1985	141681
1986	145192
1987	149745
1988	155414
1989	161820
1990	167900
1991	171751
1992	174091
1993	176774
1994	179693
1995	182605
1996	185347
1997	187967
1998	190499
1999	192818
2000	195395
2001	198930
2002	203130
2003	207462
2004	211856
2005	216287
2006	220570
2007	224529
2008	227913
2009	230718
2010	233749
2011	237161
2012	240070
2013	241914
2014	242877
2015	243497
2016	243797
2017	243671
2018	243159
2019	242303
2020	241415
2021	240767
2022	240379
2023	240297