Year	Number
2004	0.415583401918411
2005	1.04952430725098
2006	0.808551013469696
2007	0.745012640953064
2008	0.791182458400726
2009	0.841874182224274
2010	0.723423421382904
2011	0.837373018264771
2012	0.937043726444244
2013	0.988397896289825
2014	0.211972832679749
2015	0.129493191838264
2016	0.374567747116089
2017	0.393038630485535
2018	0.330404460430145
2019	0.341672003269196
2020	0.306824326515198
2021	0.303359389305115
2022	0.317980945110321