Year	Percent of GDP (Units)
1983	44.798
1984	44.443
1985	48.187
1986	47.950
1987	52.475
1988	58.560
1989	59.930
1990	57.974
1991	55.255
1992	57.154
1993	56.731
1994	56.701
1995	50.516
1996	49.418
1997	48.839
1998	44.028
1999	45.862
2000	40.669
2001	37.916
2002	40.055
2003	48.024
2004	40.333
2005	39.402
2006	41.013
2007	31.967
2008	34.871
2009	36.956
2010	35.097
2011	39.764
2012	41.491
2013	38.161
2014	36.254
2015	32.909
2016	34.490
2017	32.566
2018	32.219
2019	32.167
2020	30.966
2021	33.072
2022	29.953
2023	31.458
2024	33.915
2025	34.100
2026	33.215
2027	32.669
2028	32.059
2029	31.773