Year	Percent of GDP (Units)
1980	12.366
1981	7.870
1982	1.467
1983	4.082
1984	2.296
1985	7.989
1986	10.613
1987	17.485
1988	20.746
1989	29.867
1990	21.431
1991	22.599
1992	20.204
1993	21.702
1994	20.071
1995	24.751
1996	25.320
1997	25.078
1998	23.400
1999	22.489
2000	22.505
2001	22.953
2002	23.122
2003	23.573
2004	24.473
2005	25.156
2006	27.682
2007	27.466
2008	24.133
2009	24.317
2010	25.659
2011	21.706
2012	23.500
2013	22.702
2014	21.709
2015	22.778
2016	21.127
2017	19.875
2018	19.634
2019	19.702
2020	19.132
2021	16.646
2022	16.875
2023	19.375
2024	19.122
2025	19.585
2026	20.019
2027	20.428
2028	20.809
2029	21.258