Year	Percent of GDP (Units)
1980	22.745
1981	18.170
1982	14.280
1983	13.433
1984	13.940
1985	11.848
1986	11.068
1987	10.391
1988	11.430
1989	15.474
1990	13.346
1991	13.483
1992	16.187
1993	17.076
1994	16.696
1995	14.499
1996	14.396
1997	14.453
1998	16.933
1999	15.478
2000	15.347
2001	15.310
2002	12.443
2003	16.564
2004	21.701
2005	18.353
2006	18.474
2007	16.087
2008	15.711
2009	12.508
2010	12.281
2011	12.041
2012	11.516
2013	12.702
2014	12.555
2015	13.029
2016	13.546
2017	14.942
2018	14.351
2019	15.362
2020	16.355
2021	13.707
2022	16.315
2023	18.127
2024	17.057
2025	17.053
2026	16.953
2027	16.793
2028	16.901
2029	16.843