Year	Number
1996	0.139815583825111
1998	0.11250077188015
2000	0.130497083067894
2002	0.0586192682385445
2003	-0.0210195183753967
2004	0.0775112137198448
2005	0.132438689470291
2006	-0.387192517518997
2007	-0.363209664821625
2008	-0.33483549952507
2009	-0.234220430254936
2010	-0.208965808153152
2011	-0.10202718526125
2012	0.0530913695693016
2013	0.0367684289813042
2014	-0.0986449643969536
2015	-0.161810278892517
2016	-0.150368809700012
2017	-0.169034197926521
2018	-0.0767669156193733
2019	-0.206522792577744
2020	-0.205266669392586
2021	-0.140219897031784
2022	-0.0494473651051521