Year	Number
1996	0.927289664745331
1998	0.892576634883881
2000	1.05050778388977
2002	1.05014824867249
2003	0.879186868667603
2004	0.779151678085327
2005	0.817258954048157
2006	1.0186265707016
2007	1.19997453689575
2008	1.27120995521545
2009	1.16994321346283
2010	1.18747317790985
2011	1.18965113162994
2012	1.24083888530731
2013	1.25203061103821
2014	1.02422118186951
2015	0.820002913475037
2016	0.921830892562866
2017	0.96866375207901
2018	0.931033909320831
2019	0.824310183525085
2020	0.994383156299591
2021	0.853372395038605
2022	0.80439019203186