Year	Number
1996	0.181661412119865
1998	0.260438412427902
2000	0.282076954841614
2002	0.259410440921783
2003	0.300158023834229
2004	0.330194413661957
2005	0.268858820199966
2006	0.346091717481613
2007	0.346957564353943
2008	0.298437595367432
2009	0.247373968362808
2010	0.254238665103912
2011	0.247637912631035
2012	0.24576835334301
2013	0.240024596452713
2014	0.300576001405716
2015	0.288758873939514
2016	0.235678374767303
2017	0.238046899437904
2018	0.24063965678215
2019	0.250007599592209
2020	0.317806571722031
2021	0.326989859342575
2022	0.327443838119507