Year	Number
1996	0.328688681125641
1998	0.250788927078247
2000	0.360480934381485
2002	0.791833281517029
2003	0.374170809984207
2004	0.436752140522003
2005	0.383150041103363
2006	0.188148677349091
2007	0.175549507141113
2008	0.181815281510353
2009	0.180615961551666
2010	0.179316192865372
2011	0.209991171956062
2012	0.366530209779739
2013	0.42616268992424
2014	0.273521840572357
2015	0.107048586010933
2016	-0.0476647540926933
2017	-0.17114095389843
2018	-0.176231503486633
2019	-0.0380972623825073
2020	-0.0935939401388168
2021	0.144544184207916
2022	0.139385640621185