Year	Number
1971	51692
1974	50312
1976	48625
1977	48038
1978	46484
1979	46227
1980	44212
1981	46430
1982	45130
1984	40894
1985	43958
1986	44190
1993	59830
1994	60738
2005	64278
2008	65574
2009	65668
2010	66317
2011	65783
2012	66441
2013	68576
2014	68826
2015	69681
2016	70530
2017	72269
2018	73029
2019	73859
2020	75367
2022	79534