Year	Percent of GDP (Units)
1980	23.398
1981	17.552
1982	16.671
1983	10.698
1984	3.557
1985	10.392
1986	9.445
1987	9.549
1988	15.267
1989	11.529
1990	11.355
1991	12.146
1992	8.538
1993	6.556
1994	13.027
1995	12.075
1996	14.721
1997	13.679
1998	14.671
1999	11.236
2000	13.185
2001	13.833
2002	14.668
2003	13.976
2004	12.540
2005	19.394
2006	19.865
2007	18.966
2008	26.509
2009	28.551
2010	32.722
2011	31.676
2012	29.378
2013	29.767
2014	31.213
2015	32.368
2016	28.637
2017	26.221
2018	29.025
2019	30.233
2020	31.222
2021	31.821
2022	31.248
2023	24.556
2024	24.113
2025	24.638
2026	24.712
2027	24.611
2028	23.981
2029	23.759