Year	Percent of GDP (Units)
1980	35.714
1981	23.759
1982	16.918
1983	15.504
1984	17.679
1985	14.277
1986	8.649
1987	16.058
1988	14.757
1989	19.111
1990	20.906
1991	19.536
1992	21.588
1993	22.912
1994	22.393
1995	23.010
1996	21.320
1997	24.219
1998	25.423
1999	26.458
2000	26.028
2001	26.271
2002	26.904
2003	27.424
2004	30.423
2005	29.215
2006	34.971
2007	35.137
2008	37.251
2009	30.783
2010	30.441
2011	27.613
2012	30.280
2013	31.948
2014	30.854
2015	33.244
2016	27.561
2017	27.941
2018	23.967
2019	23.929
2020	16.195
2021	22.619
2022	22.237
2023	24.002
2024	23.881
2025	24.047
2026	23.396
2027	23.645
2028	24.645
2029	24.602