Year	%
2000	47.17466627170582
2001	46.97632901933934
2002	46.76984647322029
2003	46.57056809276889
2004	46.29921416584987
2005	45.95149488176152
2006	45.60695011238864
2007	45.20576443543216
2008	44.7526870114373
2009	44.31422517873579
2010	43.92327205676322
2011	43.582258209277946
2012	43.33876978627495
2013	43.109110169417995
2014	42.93815993050842
2015	42.80469212794799
2016	42.68854801440669
2017	42.54043601169163
2018	42.42999327280945
2019	42.33349915745971