Year	Percent of GDP (Units)
1980	39.039
1981	41.393
1982	40.871
1983	40.120
1984	40.288
1985	39.429
1986	38.316
1987	36.492
1988	34.308
1989	33.764
1990	35.040
1991	35.890
1992	37.823
1993	37.798
1994	37.508
1995	37.631
1996	35.716
1997	34.904
1998	34.488
1999	33.924
2000	33.955
2001	34.681
2002	35.961
2003	37.234
2004	38.058
2005	38.457
2006	38.403
2007	38.618
2008	40.944
2009	44.653
2010	44.729
2011	43.511
2012	43.557
2013	41.845
2014	41.187
2015	40.427
2016	39.634
2017	39.157
2018	38.872
2019	38.734
2020	49.937
2021	45.883
2022	44.422
2023	44.665
2024	44.055
2025	43.587
2026	43.340
2027	43.177
2028	43.137
2029	43.065