Year	Number
2004	0.503726005554199
2005	0.654332458972931
2006	0.54846316576004
2007	0.972128868103027
2008	0.967198193073273
2009	0.963811635971069
2010	0.988284409046173
2011	1.00905168056488
2012	1.02567172050476
2013	1.00476729869843
2019	1.32377099990845
2020	0.952043473720551
2021	0.960498690605164
2022	0.957647860050201