Year	Number
1996	-0.684481799602509
1998	-0.929671704769135
2000	-1.02066767215729
2002	-0.762321412563324
2003	-0.716323494911194
2004	-0.701032340526581
2005	-0.763833165168762
2006	-0.703135848045349
2007	-0.661545991897583
2008	-0.600079298019409
2009	-0.49437016248703
2010	-0.385760486125946
2011	-0.442926466464996
2012	-0.519839763641357
2013	-0.518606007099152
2014	-0.310979843139648
2015	-0.318997442722321
2016	-0.321364849805832
2017	-0.412762373685837
2018	-0.414187848567963
2019	-0.425378829240799
2020	-0.376249194145203
2021	-0.280372351408005
2022	-0.16577909886837