Year	%
1996	64.44514
1997	67.05421
1999	68.51805
2000	57.1618
2001	57.03636
2002	56.16727
2003	57.68153
2004	57.78894
2005	57.87982
2006	57.15049
2007	54.8021
2008	54.8021
2009	55.25745
2010	52.07532
2011	52.34653
2012	47.82401
2013	46.38336
2014	46.35717
2015	36.49318
2016	38.31081
2017	43.22987
2018	42.36118
2019	36.94675
2020	36.94675
2021	35.89907