Year	Percent of GDP (Units)
1980	27.026
1981	32.171
1982	31.315
1983	22.240
1984	18.962
1985	17.040
1986	19.839
1987	20.638
1988	24.039
1989	17.911
1990	15.205
1991	15.900
1992	16.014
1993	17.795
1994	20.969
1995	21.672
1996	19.726
1997	21.134
1998	20.841
1999	18.184
2000	17.443
2001	16.506
2002	16.682
2003	17.227
2004	16.121
2005	15.387
2006	18.799
2007	22.267
2008	27.006
2009	20.704
2010	24.627
2011	24.439
2012	24.256
2013	25.909
2014	25.124
2015	24.293
2016	22.695
2017	21.448
2018	22.386
2019	21.823
2020	19.929
2021	21.730
2022	22.115
2023	19.158
2024	20.383
2025	20.828
2026	20.936
2027	21.135
2028	21.279
2029	21.479