Year	Percent of GDP (Units)
1980	23.310
1981	24.277
1982	22.071
1983	22.253
1984	25.096
1985	24.188
1986	23.741
1987	23.620
1988	22.828
1989	22.514
1990	21.529
1991	20.111
1992	20.078
1993	20.394
1994	21.279
1995	21.273
1996	21.702
1997	22.410
1998	22.958
1999	23.419
2000	23.678
2001	22.177
2002	21.723
2003	21.746
2004	22.652
2005	23.376
2006	23.538
2007	22.557
2008	21.037
2009	17.769
2010	18.672
2011	19.034
2012	19.951
2013	20.379
2014	20.901
2015	21.415
2016	20.888
2017	21.156
2018	21.569
2019	21.687
2020	21.408
2021	21.374
2022	21.882
2023	21.331
2024	21.467
2025	21.609
2026	21.860
2027	22.007
2028	22.146
2029	22.292