Year	Percent of GDP (Units)
1990	25.353
1991	26.422
1992	23.028
1993	23.177
1994	24.102
1995	24.764
1996	23.097
1997	21.405
1998	21.373
1999	20.510
2000	21.732
2001	22.406
2002	20.802
2003	19.344
2004	19.266
2005	20.145
2006	20.523
2007	19.876
2008	19.087
2009	21.012
2010	19.310
2011	19.132
2012	17.315
2013	16.609
2014	17.171
2015	19.269
2016	18.215
2017	17.884
2018	17.543
2019	19.453
2020	20.953
2021	20.010
2022	18.522