Year	Number
1996	8.19672107696533
1998	6.55737686157227
2000	13.1147537231445
2002	11.8918914794922
2003	21.0810813903809
2004	27.8606967926025
2005	25.9803924560547
2006	33.1707305908203
2007	19.9029121398926
2008	33.009708404541
2009	27.2727279663086
2010	26.7942581176758
2011	26.0663509368896
2012	39.8104248046875
2013	39.8104248046875
2014	34.1346168518066
2015	30.9523811340332
2016	35.7142868041992
2017	32.8571434020996
2018	26.1904754638672
2019	27.1428565979004
2020	12.380952835083
2021	12.8571424484253
2022	12.7358493804932