Year	Percent of GDP (Units)
1980	23.569
1981	20.777
1982	19.706
1983	20.428
1984	20.641
1985	21.115
1986	22.641
1987	22.710
1988	23.979
1989	24.670
1990	24.226
1991	23.373
1992	23.309
1993	21.466
1994	21.687
1995	21.728
1996	22.561
1997	22.843
1998	22.944
1999	23.217
2000	22.570
2001	22.718
2002	21.009
2003	20.488
2004	20.321
2005	20.454
2006	21.024
2007	23.349
2008	22.331
2009	20.721
2010	20.222
2011	20.040
2012	18.725
2013	18.510
2014	17.913
2015	22.475
2016	20.488
2017	20.593
2018	20.958
2019	22.096
2020	21.756
2021	21.533
2022	21.232
2023	20.077
2024	20.103
2025	20.197
2026	20.155
2027	20.107
2028	20.088
2029	20.099