Year	Number
1996	0.358660489320755
1998	0.392262578010559
2000	0.367690443992615
2002	0.366997271776199
2003	0.276095181703568
2004	0.319958239793777
2005	0.203041076660156
2006	0.266264259815216
2007	0.279377818107605
2008	0.231026411056519
2009	0.216449201107025
2010	0.208097830414772
2011	0.211273431777954
2012	0.230768129229546
2013	0.238375931978226
2014	0.285645455121994
2015	0.274665802717209
2016	0.290534406900406
2017	0.291876524686813
2018	0.30007192492485
2019	0.307287633419037
2020	0.335054785013199
2021	0.325010359287262
2022	0.30890029668808