Year	Number of
1988	0
1997	11050
1998	1152
1999	12287
2000	34131
2001	29284
2002	40159
2003	49342
2004	44602
2005	42722
2006	44558
2007	58802
2008	72541
2009	76336
2010	84648
2011	91433
2012	91885
2013	97665
2014	103045
2015	112840
2016	112606
2017	100553
2018	89939
2019	95722
2020	89640