Year	Number
1971	49243
1972	50141
1973	50182
1974	50988
1975	52503
1976	52700
1977	52718
1978	53720
1979	55362
1980	56730
1981	57536
1982	55874
1983	60434
1984	57293
1985	56371
1986	66388
1987	64429
1988	64130
1989	62784
1990	62319
1991	63022
1992	63100
1993	64700
1994	63872
2011	111752
2012	111039
2013	107656
2014	104815.46875
2015	103930.1171875
2016	101643.1015625
2017	100110.171875
2018	100658.0234375
2019	101033.7421875
2020	101723.96875
2021	101614