Year	Number
1996	0.927289664745331
1998	0.892576634883881
2000	0.866731762886047
2002	0.845220685005188
2003	0.68854159116745
2004	0.225117295980453
2005	0.594697237014771
2006	0.866387069225311
2007	0.918139517307281
2008	0.880708277225494
2009	0.913909912109375
2010	0.896695196628571
2011	0.891406118869781
2012	0.837668597698212
2013	0.865128815174103
2014	1.08203399181366
2015	1.02662456035614
2016	1.04898059368134
2017	1.10762357711792
2018	1.21318626403809
2019	1.2790025472641
2020	1.38349044322968
2021	1.40679204463959
2022	1.4222446680069