Year	Number
2004	1.19393825531006
2005	1.10941541194916
2006	1.06922149658203
2007	0.826464056968689
2008	0.847226142883301
2009	0.85692697763443
2010	0.84711217880249
2011	0.829746901988983
2012	0.834794282913208
2013	0.842209875583649
2014	0.019607974216342
2015	0.830110430717468
2016	0.578207671642303
2017	0.574292600154877
2018	1.05680096149445
2019	1.02643442153931
2020	0.87100625038147
2021	0.887287676334381
2022	0.95678585767746