Year	Number of
1980	112307
1981	116821
1982	104715
1983	106300
1984	151863
1985	151028
1986	153129
1987	163740
1988	183113
1989	217272
1990	317008
1991	207371
1992	236172
1993	178134
1994	180044
1995	119186
1996	165453
1997	195767
1998	162360
1999	145807
2000	119914
2001	107133
2002	118408
2003	132759
2004	130530
2005	137100
2006	147305
2007	140588
2008	139603
2009	146565
2010	166323
2011	195560
2012	216627
2013	229918
2014	243379
2015	276672
2016	332941
2017	317266
2018	371668
2019	409167
2020	256541