Year	Percent of GDP (Units)
1980	52.351
1981	55.848
1982	57.161
1983	57.298
1984	55.800
1985	54.893
1986	51.921
1987	53.057
1988	55.136
1989	55.200
1990	54.953
1991	55.377
1992	56.342
1993	59.295
1994	59.293
1995	58.526
1996	57.998
1997	55.907
1998	55.395
1999	54.533
2000	52.687
2001	52.837
2002	53.214
2003	53.639
2004	52.997
2005	51.242
2006	49.830
2007	49.591
2008	50.411
2009	56.536
2010	56.673
2011	56.429
2012	57.955
2013	55.820
2014	55.218
2015	54.528
2016	52.479
2017	50.550
2018	50.548
2019	49.668
2020	53.477
2021	49.805
2022	44.976
2023	46.798
2024	47.736
2025	48.451
2026	48.976
2027	49.331
2028	49.543
2029	49.732