Year	Number
1996	37.2340431213379
1998	38.2978706359863
2000	24.8677253723145
2002	32.2751312255859
2003	13.5678396224976
2004	22.3300971984863
2005	16.990291595459
2006	17.3913040161133
2007	7.72946882247925
2008	8.65384578704834
2009	11.3744077682495
2010	13.7440757751465
2011	13.7440757751465
2012	18.4834117889404
2013	21.8009471893311
2014	25.7142848968506
2015	22.8571434020996
2016	31.4285717010498
2017	30
2018	19.3396224975586
2019	23.5849056243896
2020	20.2830181121826
2021	22.6415100097656
2022	21.698112487793