Year	%
1993	46.36613
1997	53.79715
1998	52.56101
2001	51.73089
2002	42.19884
2003	41.08639
2005	40.90303
2006	39.97989
2007	39.59277
2008	60.68623
2009	53.87244
2014	43.70378
2015	43.92992
2016	44.39214
2017	45.41882
2018	32.42001
2019	32.61895
2020	32.86782
2021	33.30755