Year	Number
1996	0.981364369392395
1998	0.930068552494049
2000	1.03310573101044
2002	0.672591328620911
2003	0.27125072479248
2004	0.140847533941269
2005	0.124187760055065
2006	0.667080104351044
2007	0.574654936790466
2008	0.492879867553711
2009	0.121949501335621
2010	0.411818206310272
2011	0.351707607507706
2012	0.40227073431015
2013	0.48620143532753
2014	0.415347635746002
2015	0.503706395626068
2016	0.347932636737823
2017	0.380708187818527
2018	0.07756457477808
2019	0.527470409870148
2020	0.481457024812698
2021	0.4898921251297
2022	0.503939092159271