Year	Number
1996	0.159563526511192
1998	0.168831422924995
2000	0.299946576356888
2002	0.285690128803253
2003	0.331788569688797
2004	0.464085936546326
2005	0.490570604801178
2006	0.488393604755402
2007	0.428628772497177
2008	0.527956008911133
2009	0.534014344215393
2010	0.563034415245056
2011	0.597754776477814
2012	0.485911756753922
2013	0.463612854480743
2014	0.485101789236069
2015	0.466433674097061
2016	0.597371816635132
2017	0.512414991855621
2018	0.47263640165329
2019	0.499799251556396
2020	0.654226005077362
2021	0.679373204708099
2022	0.622537851333618