Year	Number
1996	0.887160181999207
1998	0.752557337284088
2000	0.674126327037811
2002	0.789837002754211
2003	0.897875249385834
2004	0.90135532617569
2005	0.885157346725464
2006	0.954627931118011
2007	0.888730525970459
2008	1.11381042003632
2009	1.14303851127625
2010	1.01478588581085
2011	0.97692596912384
2012	1.018315076828
2013	1.00155377388
2014	0.996909558773041
2015	0.937552809715271
2016	1.08773446083069
2017	1.12905192375183
2018	1.08230376243591
2019	1.04191696643829
2020	1.12151610851288
2021	1.13862144947052
2022	1.0690666437149