Year	%
1990	35.05
1993	31.81
1994	34.1
1997	28.14
1998	20.88
2000	17.65
2001	16.84
2003	15.9
2004	17.23
2005	18.22
2006	18.06
2007	18.49
2008	18.17
2009	17.61
2010	18.66
2011	19.77
2012	20.82
2014	18.4
2015	12.89
2017	25.64
2018	42.05
2019	79.81
2020	21.21
2021	16.28