Year	Number
1996	0.525695502758026
1998	0.319004893302917
2000	0.408773571252823
2002	0.353681147098541
2003	0.126424372196198
2004	0.150153517723083
2005	0.484037667512894
2006	0.405120253562927
2007	0.251871973276138
2008	0.165260821580887
2009	0.271775960922241
2010	0.148407876491547
2011	0.189088448882103
2012	0.267358660697937
2013	0.25057727098465
2014	-0.0223473571240902
2015	0.0638082250952721
2016	0.226832523941994
2017	0.211421594023705
2018	0.0327426008880138
2019	0.0389102399349213
2020	-0.0385358110070229
2021	-0.118189707398415
2022	-0.0305646620690823