Year	Number
1996	5.85106372833252
1998	10.1063833236694
2000	4.7619047164917
2002	22.2222213745117
2003	23.1155776977539
2004	18.4466018676758
2005	16.5048542022705
2006	9.66183567047119
2007	7.72946882247925
2008	7.692307472229
2009	10.9004735946655
2010	17.5355453491211
2011	23.6966819763184
2012	22.748815536499
2013	25.5924167633057
2014	34.2857131958008
2015	50.476188659668
2016	46.6666679382324
2017	42.3809509277344
2018	41.0377349853516
2019	40.0943412780762
2020	44.8113212585449
2021	33.0188674926758
2022	18.8679237365723