Year	Percent of GDP (Units)
1980	26.140
1981	24.517
1982	22.536
1983	22.572
1984	22.609
1985	20.480
1986	21.931
1987	19.230
1988	19.518
1989	20.596
1990	16.533
1991	15.693
1992	15.413
1993	17.306
1994	17.641
1995	18.373
1996	18.306
1997	19.421
1998	18.664
1999	16.454
2000	14.735
2001	18.646
2002	21.019
2003	16.404
2004	14.797
2005	13.163
2006	13.361
2007	15.999
2008	5.230
2009	6.410
2010	7.814
2011	10.856
2012	12.436
2013	21.722
2014	21.627
2015	25.030
2016	29.181
2017	25.962
2018	26.368
2019	27.221
2020	22.221
2021	20.240
2022	22.596
2023	25.357
2024	24.787
2025	24.725
2026	24.981
2027	25.217
2028	25.385
2029	25.468