Year	Number
1996	1.04229032993317
1998	1.09459185600281
2000	1.09375238418579
2002	1.10961353778839
2003	1.0535876750946
2004	0.985611915588379
2005	0.932384252548218
2006	1.00535082817078
2007	0.997471451759338
2008	1.03441321849823
2009	1.01225316524506
2010	0.982540488243103
2011	0.987989783287048
2012	0.946590006351471
2013	0.966706514358521
2014	1.06708121299744
2015	0.878904223442078
2016	0.899462401866913
2017	0.884841680526733
2018	0.797379553318024
2019	0.867350518703461
2020	0.873136043548584
2021	0.813615262508392
2022	0.794093906879425