Year	Number
1975	3132
1980	4489
1982	5227
1983	5342
1984	6313
1986	6945
1991	8507
1993	10203
2004	16667
2015	39613
2016	44956
2017	39322
2019	47069
2020	32402
2021	49891
2022	48543