Year	%
1992	30.96239
1993	6.672698
1995	34.14789
1996	35.74366
1997	34.79444
1998	48.86037
1999	45.05256
2000	42.45406
2001	38.42257
2002	54.15063
2003	27.92921
2004	36.70503
2005	22.61065
2006	23.25282
2007	24.92895
2008	25.16628
2009	24.82252
2010	24.51021
2011	24.57493
2012	23.88734
2013	24.30963
2014	24.80138
2015	24.35131
2016	24.73293
2017	24.95071
2018	26.46775
2019	25.54906
2020	25.16945
2021	24.531