Year	Percent of GDP (Units)
1980	33.994
1981	33.368
1982	33.845
1983	28.791
1984	26.775
1985	24.864
1986	22.614
1987	24.746
1988	33.271
1989	30.215
1990	27.413
1991	20.141
1992	17.298
1993	15.439
1994	15.760
1995	16.317
1996	15.754
1997	18.845
1998	20.285
1999	19.788
2000	18.596
2001	17.366
2002	19.908
2003	19.320
2004	19.194
2005	21.205
2006	23.104
2007	27.510
2008	28.487
2009	21.895
2010	21.298
2011	17.084
2012	18.603
2013	16.553
2014	15.892
2015	16.618
2016	17.445
2017	17.145
2018	18.709
2019	20.054
2020	15.995
2021	15.172
2022	17.019
2023	12.875
2024	11.681
2025	11.235
2026	11.745
2027	12.694
2028	13.029
2029	12.783