Year	Number
1996	-0.567770183086395
1998	-0.711399912834167
2000	-0.789923965930939
2002	-0.793843626976013
2003	-0.764577209949493
2004	-1.13142073154449
2005	-0.912761688232422
2006	-0.851902544498444
2007	-0.666273534297943
2008	-0.94266402721405
2009	-0.924538612365723
2010	-0.909265220165253
2011	-0.9275963306427
2012	-0.910916328430176
2013	-0.959419846534729
2014	-0.895695507526398
2015	-0.888245820999146
2016	-0.774358868598938
2017	-0.801386773586273
2018	-0.86835104227066
2019	-0.800371825695038
2020	-0.825767576694489
2021	-0.766241490840912
2022	-0.727800726890564