Year	Number
1996	0.62058299779892
1998	0.585556745529175
2000	0.587459146976471
2002	0.921997308731079
2003	0.854176342487335
2004	0.864507555961609
2005	0.913030743598938
2006	1.08249938488007
2007	0.845191836357117
2008	0.951468646526337
2009	0.873511850833893
2010	0.9017294049263
2011	0.922613501548767
2012	0.921718597412109
2013	0.916412830352783
2014	1.03195381164551
2015	1.0261482000351
2016	1.00860571861267
2017	1.03044140338898
2018	0.951217532157898
2019	0.919761836528778
2020	0.911170899868011
2021	1.07069706916809
2022	1.0939074754715