Year	Number
1970	242305
1971	244205
1972	247498
1974	255940
1975	257540
1978	256103
1981	241755
1982	260671
1983	248739
1997	285043
1999	189541
2000	167595
2001	178368
2002	143782
2004	97796
2005	83483
2006	69697
2007	57391
2008	55339
2011	33014
2012	63655
2013	89470
2014	111805
2015	118151
2016	129151
2017	120722
2018	109374
2019	112043
2020	107518
2021	91268
2022	88928