Year	Number
1996	13.297872543335
1998	26.5957450866699
2000	30.1587295532227
2002	20.1058197021484
2003	16.0804023742676
2004	12.62135887146
2005	16.990291595459
2006	13.5265703201294
2007	17.3913040161133
2008	16.8269233703613
2009	16.1137447357178
2010	10.4265403747559
2011	4.26540279388428
2012	5.21327018737793
2013	3.79146909713745
2014	6.1904764175415
2015	6.66666650772095
2016	6.66666650772095
2017	7.14285707473755
2018	7.54716968536377
2019	8.49056625366211
2020	8.01886749267578
2021	9.43396186828613
2022	9.90566062927246