Year	Number
2002	1.0047040571424697
2003	1.005258517964316
2004	0.3611581009792037
2005	0.5084394817856349
2006	1.1926907447868025
2007	0.6241078595018581
2008	0.9155723305600977
2009	1.0737289542280304
2010	0.726325994994142
2011	0.6984830789966693
2012	0.4605810227608861
2013	0.7280285824771217
2014	1.9257713370695377
2015	1.467171061608851
2016	2.612095679356306
2017	1.5114696260091336
2018	1.2592107046228331
2019	1.2012167402294058
2020	1.3280973387160921
2021	1.1966181931113293
2022	1.46222348881556
2023	1.5955865954328368