Year	Number
1996	-0.183629289269447
1998	-0.462085247039795
2000	-0.342374563217163
2002	-0.0727162584662437
2003	-0.271150827407837
2004	-0.439886003732681
2005	-0.312482684850693
2006	-0.162567287683487
2007	-0.0764035955071449
2008	-0.12021116912365
2009	-0.152532562613487
2010	-0.201909422874451
2011	-0.109467715024948
2012	-0.204318970441818
2013	-0.16699843108654
2014	0.0678639337420464
2015	-0.00669880630448461
2016	-0.0278422981500626
2017	-0.174448192119598
2018	-0.256534099578857
2019	-0.124889262020588
2020	-0.0789144933223724
2021	-0.114498667418957
2022	-0.391204476356506