Year	%
1996	45.82989
1999	48.12673
2001	48.78861
2002	56.0286
2003	54.76272
2006	44.70739
2007	49.02407
2008	49.82008
2009	47.0469
2010	47.28881
2011	47.14022
2012	40.19639
2013	46.47091
2014	46.47091
2015	46.20338
2016	47.47423
2017	46.89997
2018	43.45103
2019	42.31924
2020	48.07414
2021	48.50455