Year	Number
1996	11.1702127456665
1998	9.04255294799805
2000	19.5767192840576
2002	8.46560859680176
2003	15.0753765106201
2004	14.0776700973511
2005	15.0485439300537
2006	18.8405799865723
2007	21.2560386657715
2008	21.634614944458
2009	36.4928894042969
2010	34.1232223510742
2011	35.0710906982422
2012	31.2796211242676
2013	29.8578205108643
2014	30.9523811340332
2015	26.6666660308838
2016	25.7142848968506
2017	27.619047164917
2018	34.4339637756348
2019	34.4339637756348
2020	40.0943412780762
2021	38.6792449951172
2022	46.2264137268066