Year	Number
1996	-0.770033240318298
1998	-0.162388324737549
2000	-0.572284936904907
2002	-0.759720921516418
2003	-0.961056590080261
2004	-0.842910349369049
2005	-0.793961822986603
2006	-0.853825330734253
2007	-0.815987229347229
2008	-0.728682398796082
2009	-0.673675775527954
2010	-0.586674451828003
2011	-0.686557531356812
2012	-0.570306479930878
2013	-0.178656712174416
2014	-0.0185332093387842
2015	-0.147344976663589
2016	-0.0917104333639145
2017	-0.0789325907826424
2018	-0.0948107913136482
2019	-0.238249406218529
2020	-0.270263135433197
2021	-0.257427930831909
2022	-0.239295244216919