Year	Number
1996	0.598828971385956
1998	0.608353674411774
2000	0.552490949630737
2002	0.591441988945007
2003	0.548373997211456
2004	0.50747549533844
2005	0.5277419090271
2006	0.529348492622375
2007	0.593082547187805
2008	0.580513060092926
2009	0.580420553684235
2010	0.585773587226868
2011	0.542900204658508
2012	0.362745106220245
2013	0.360852837562561
2014	0.0232262052595615
2015	-0.0205763187259436
2016	0.00774911418557167
2017	0.0786409378051758
2018	0.185752928256989
2019	0.19215814769268
2020	0.308871775865555
2021	0.240280911326408
2022	0.280016601085663