Year	Percent of GDP (Units)
1980	43.849
1981	53.719
1982	46.451
1983	40.513
1984	36.717
1985	26.358
1986	24.949
1987	29.030
1988	27.368
1989	27.535
1990	39.414
1991	30.764
1992	41.407
1993	43.792
1994	39.205
1995	40.120
1996	36.119
1997	30.036
1998	26.235
1999	23.809
2000	27.398
2001	26.236
2002	24.675
2003	24.748
2004	33.783
2005	41.568
2006	35.022
2007	37.023
2008	36.049
2009	32.539
2010	35.038
2011	31.748
2012	31.032
2013	26.600
2014	25.808
2015	24.835
2016	23.407
2017	19.822
2018	19.752
2019	18.757
2020	18.433
2021	18.301
2022	18.558
2023	17.630
2024	18.066
2025	17.398
2026	17.332
2027	17.669
2028	17.749
2029	17.351