Year	Percent of GDP (Units)
1980	19.808
1981	19.490
1982	19.034
1983	19.527
1984	19.789
1985	20.072
1986	19.284
1987	20.072
1988	20.377
1989	20.961
1990	20.363
1991	19.304
1992	17.953
1993	17.708
1994	18.599
1995	18.237
1996	18.544
1997	17.471
1998	17.795
1999	15.789
2000	16.491
2001	16.341
2002	16.149
2003	15.893
2004	15.390
2005	15.882
2006	15.090
2007	14.848
2008	13.744
2009	11.746
2010	13.388
2011	14.259
2012	12.894
2013	11.511
2014	12.368
2015	12.876
2016	12.412
2017	14.949
2018	14.123
2019	15.562
2020	14.657
2021	17.075
2022	16.247
2023	16.176
2024	14.230
2025	14.368
2026	14.825
2027	14.769
2028	14.658
2029	14.571