Year	Percent of GDP (Units)
1981	16.051
1982	15.624
1983	13.238
1984	19.672
1985	19.464
1986	13.536
1987	13.021
1988	13.981
1989	11.588
1990	12.532
1991	15.578
1992	16.704
1993	16.564
1994	14.371
1995	15.244
1996	16.237
1997	19.632
1998	23.607
1999	18.772
2000	18.143
2001	14.268
2002	16.295
2003	13.232
2004	11.022
2005	14.254
2006	13.865
2007	15.187
2008	17.553
2009	16.971
2010	17.007
2011	20.718
2012	17.673
2013	19.018
2014	21.034
2015	20.281
2016	21.057
2017	22.220
2018	20.596
2019	19.875
2020	15.778
2021	16.835
2022	15.133
2023	15.936
2024	16.611
2025	16.305
2026	16.038
2027	15.791
2028	15.563
2029	15.289