Year	Percent of GDP (Units)
1980	21.329
1981	30.357
1982	26.683
1983	22.755
1984	22.676
1985	49.441
1986	29.758
1987	27.021
1988	26.836
1989	20.369
1990	28.445
1991	29.360
1992	27.473
1993	28.613
1994	36.342
1995	35.864
1996	28.225
1997	29.735
1998	22.923
1999	17.893
2000	17.176
2001	20.490
2002	15.746
2003	20.812
2004	21.629
2005	20.882
2006	21.192
2007	23.874
2008	24.036
2009	21.939
2010	24.026
2011	19.723
2012	17.183
2013	19.323
2014	20.160
2015	20.761
2016	23.963
2017	21.590
2018	20.458
2019	22.532
2020	17.186
2021	21.270
2022	18.958
2023	17.187
2024	16.449
2025	16.684
2026	16.623
2027	16.984
2028	17.532
2029	17.512