Year	Number
1977	361248
1986	35549
2001	30360
2002	33440
2003	43441
2004	65570
2005	69551
2006	75652
2007	87335
2008	103995
2009	143774
2010	119513
2011	125483
2012	133554
2013	5261.341796875
2014	115935
2015	70456
2016	57926
2017	3422.46411132812
2018	102.91300201416
2019	64330
2020	46742
2021	55438