Year	Percent of GDP (Units)
1980	22.176
1981	23.459
1982	21.191
1983	20.731
1984	19.424
1985	24.024
1986	22.466
1987	23.066
1988	23.534
1989	17.955
1990	22.859
1991	20.439
1992	15.487
1993	16.822
1994	16.150
1995	16.658
1996	13.028
1997	13.482
1998	13.424
1999	15.503
2000	17.094
2001	18.316
2002	15.395
2003	15.887
2004	16.773
2005	16.829
2006	18.314
2007	20.045
2008	19.282
2009	19.001
2010	21.264
2011	21.887
2012	22.192
2013	22.414
2014	24.955
2015	22.103
2016	19.348
2017	20.663
2018	19.376
2019	19.342
2020	19.653
2021	20.391
2022	19.160
2023	17.442
2024	18.399
2025	19.406
2026	19.774
2027	20.030
2028	20.277
2029	20.277