Year	Percent of GDP (Units)
1980	25.498
1981	12.789
1982	13.079
1983	14.806
1984	20.911
1985	14.523
1986	12.536
1987	13.372
1988	12.543
1989	12.169
1990	22.086
1991	20.116
1992	26.745
1993	25.084
1994	24.615
1995	24.007
1996	24.805
1997	24.059
1998	25.510
1999	24.937
2000	23.948
2001	22.350
2002	22.729
2003	22.868
2004	23.682
2005	25.929
2006	25.723
2007	26.553
2008	21.635
2009	27.979
2010	28.519
2011	26.550
2012	33.400
2013	29.949
2014	29.901
2015	32.063
2016	34.474
2017	37.280
2018	35.103
2019	32.037
2020	31.577
2021	33.035
2022	33.428