Year	Number
2004	0.597243964672089
2005	0.654332458972931
2006	0.54846316576004
2007	0.972128868103027
2008	0.967198193073273
2009	0.963811635971069
2010	0.767428874969482
2011	0.784417808055878
2012	0.800454020500183
2013	0.78344589471817
2018	1.16351628303528
2019	1.16260325908661
2020	1.08925461769104
2021	1.10831809043884
2022	1.10207986831665