Year	Number
1996	-0.430167496204376
1998	-0.507687985897064
2000	-0.522596776485443
2002	-0.237842887639999
2003	-0.148958757519722
2004	-0.100426845252514
2005	-0.124243184924126
2006	-0.388349890708923
2007	-0.255605638027191
2008	-0.349167257547379
2009	-0.288328468799591
2010	-0.310507625341415
2011	-0.31161817908287
2012	-0.346864879131317
2013	-0.35747629404068
2014	-0.402516543865204
2015	-0.580078840255737
2016	-0.443195044994354
2017	-0.526768147945404
2018	-0.562712371349335
2019	-0.476597219705582
2020	-0.48384702205658
2021	-0.542337775230408
2022	-1.14197266101837