Year	Number
1996	0.59960013628006
1998	0.620563447475433
2000	0.725428760051727
2002	0.67558491230011
2003	0.764780938625336
2004	0.510814487934113
2005	0.40130627155304
2006	0.171267151832581
2007	0.312711805105209
2008	0.360625088214874
2009	0.117766954004765
2010	0.0599887408316135
2011	-0.00103536900132895
2012	0.0581903122365475
2013	0.167196571826935
2014	0.250029027462006
2015	0.337751358747482
2016	0.287313491106033
2017	0.169449850916862
2018	0.281118184328079
2019	0.251167297363281
2020	0.238317847251892
2021	0.303267598152161
2022	0.460202544927597