Year	%
1992	47.55614
1995	19.72918
1997	22.0433
1998	23.16753
1999	24.20342
2000	24.00479
2001	24.66575
2002	25.65559
2003	23.37453
2004	23.01268
2005	22.97456
2006	20.23103
2007	43.80859
2008	45.49072
2009	45.55139
2010	21.29695
2011	44.11392
2012	18.09623
2013	42.89116
2014	28.114
2015	26.22231
2016	24.87501
2017	27.56214
2018	25.4007
2019	28.90894
2020	32.87814
2021	28.65253