Year	Number
1996	2.15053772926331
1998	1.06951868534088
2000	1.59574472904205
2002	2.64550256729126
2003	5.29100513458252
2004	9.35960578918457
2005	13.1707315444946
2006	11.2195119857788
2007	12.1359224319458
2008	7.28155326843262
2009	9.56937789916992
2010	12.380952835083
2011	13.7440757751465
2012	10.4265403747559
2013	9.95260620117188
2014	14.9038457870483
2015	22.8571434020996
2016	16.6666660308838
2017	16.1904754638672
2018	20
2019	12.380952835083
2020	10.4761905670166
2021	6.66666650772095
2022	8.49056625366211