Year	Number
1996	-0.0383590497076511
1998	0.0678859651088715
2000	0.28022488951683
2002	0.628807723522186
2003	0.558495879173279
2004	0.686754405498505
2005	0.43447408080101
2006	0.560829281806946
2007	0.60539698600769
2008	0.573651909828186
2009	0.612926959991455
2010	0.608463644981384
2011	0.623747110366821
2012	0.606891453266144
2013	0.642667889595032
2014	0.619112372398376
2015	0.586513638496399
2016	0.654191136360168
2017	0.681904494762421
2018	0.793498814105988
2019	0.685416102409363
2020	0.607223808765411
2021	0.621482789516449
2022	0.61216127872467