Year	Number
1970	91387
1971	107885
1972	98786
1994	43633
1998	62231
1999	58301
2000	27160
2001	36089
2002	55453
2003	47989
2004	12015
2005	8204
2006	95697
2007	91783
2008	77627
2009	83151
2010	56560
2011	43925
2012	14041
2015	8600
2016	15059