Year	Number
1996	14.1304349899292
1998	7.0652174949646
2000	7.60869550704956
2002	6.48648643493652
2003	8.64864826202393
2004	11.4427862167358
2005	6.86274528503418
2006	3.92156863212585
2007	6.7961163520813
2008	8.25242710113525
2009	12.4401912689209
2010	10.0478467941284
2011	8.05687236785889
2012	11.3744077682495
2013	11.3744077682495
2014	12.5
2015	10.4761905670166
2016	12.380952835083
2017	18.0952377319336
2018	19.0476188659668
2019	27.619047164917
2020	21.4285717010498
2021	17.1428565979004
2022	7.54716968536377