Year	Number
1973	218128
1978	262501
1980	271236
1981	270680
1982	260828
1983	243458
1984	231538
1985	221270
1986	218570
1987	208777
1988	209957
1993	259402
2000	307157
2001	253067
2002	241504
2003	226040
2004	229160
2005	209122
2006	110799
2007	66609
2008	23041
2009	46682
2010	26275
2011	25815
2012	35762
2013	68888
2014	63488
2015	85042
2016	103985
2017	149231
2018	183090
2019	209267
2020	211326
2021	232049
2022	246025