Year	Number
1996	5.97826099395752
1998	9.2391300201416
2000	7.60869550704956
2002	7.56756734848022
2003	15.1351346969604
2004	12.93532371521
2005	7.35294103622437
2006	8.33333301544189
2007	7.76699018478394
2008	7.76699018478394
2009	6.22009563446045
2010	9.09090900421143
2011	9.00473976135254
2012	21.8009471893311
2013	21.3270149230957
2014	25.480770111084
2015	27.1428565979004
2016	12.8571424484253
2017	11.9047622680664
2018	19.0476188659668
2019	20
2020	12.380952835083
2021	16.1904754638672
2022	18.3962268829346