Year	Number
1996	0.94790905714035
1998	0.959765493869781
2000	0.978470504283905
2002	1.25971353054047
2003	1.27146780490875
2004	0.989858388900757
2005	1.11041069030762
2006	0.987025737762451
2007	0.951324939727783
2008	0.851571798324585
2009	0.6683109998703
2010	0.679114758968353
2011	0.726216852664948
2012	0.737992703914642
2013	0.753769516944885
2014	0.797605693340302
2015	0.744271993637085
2016	0.869581997394562
2017	0.938193321228027
2018	0.912800967693329
2019	1.16250705718994
2020	1.00946378707886
2021	0.88403844833374
2022	0.945017695426941