Year	Percent of GDP (Units)
1980	49.200
1981	56.183
1982	53.161
1983	47.228
1984	47.852
1985	41.210
1986	41.523
1987	45.542
1988	50.798
1989	45.547
1990	48.583
1991	48.691
1992	44.106
1993	40.810
1994	39.879
1995	31.378
1996	25.111
1997	29.688
1998	27.081
1999	31.384
2000	21.353
2001	16.884
2002	16.686
2003	17.729
2004	13.495
2005	13.156
2006	11.883
2007	17.003
2008	21.090
2009	13.580
2010	17.767
2011	17.484
2012	18.812
2013	18.738
2014	24.167
2015	26.839
2016	22.687
2017	26.475
2018	25.465
2019	29.596
2020	23.723
2021	22.643
2022	23.043
2023	21.403
2024	21.219
2025	21.070
2026	20.825
2027	20.649
2028	20.477
2029	20.333