Year	%
2005	3.52553179140661
2006	3.46066404520994
2007	2.98260391267765
2008	3.10639256827815
2009	4.21499469701351
2010	3.10772417173934
2011	3.46686409051456
2012	3.44682339262827
2013	2.85728229301093
2014	2.25174733022776
2015	2.84649627717535
2016	3.08157613195282
2017	2.8789163660392
2018	2.59786426236426
2019	2.65554756569737
2020	1.86754766697946
2021	2.07937608671228
2022	2.64123318576759