Year	Number
1996	12.2340421676636
1998	18.0851058959961
2000	11.1111106872559
2002	34.9206352233887
2003	35.1758804321289
2004	27.6699028015137
2005	25.7281551361084
2006	17.3913040161133
2007	10.1449279785156
2008	9.61538505554199
2009	18.4834117889404
2010	26.5402851104736
2011	36.0189590454102
2012	36.0189590454102
2013	37.9146919250488
2014	45.238094329834
2015	59.523811340332
2016	57.1428565979004
2017	57.1428565979004
2018	53.301887512207
2019	53.7735862731934
2020	56.6037750244141
2021	47.6415100097656
2022	30.6603775024414