Year	%
1992	47.85622
1995	18.89572
1997	21.03678
1998	21.47732
1999	23.01195
2000	22.87429
2001	23.39736
2002	24.43632
2003	22.0556
2004	22.32769
2005	22.38748
2006	19.52958
2007	44.0559
2008	45.67935
2009	45.65614
2010	20.44833
2011	44.18037
2012	17.2453
2013	43.00342
2014	27.3612
2015	25.75197
2016	23.96307
2017	26.46855
2018	24.83399
2019	27.69005
2020	31.35209
2021	27.33109