Year	Percent of GDP (Units)
1985	46.147
1986	46.887
1987	46.073
1988	46.113
1989	47.944
1990	49.506
1991	53.013
1992	52.529
1993	46.809
1994	42.778
1995	41.625
1996	39.886
1997	39.348
1998	40.144
1999	39.267
2000	38.311
2001	37.247
2002	36.776
2003	36.686
2004	36.162
2005	37.116
2006	37.854
2007	37.080
2008	38.573
2009	40.450
2010	43.039
2011	42.420
2012	39.784
2013	38.636
2014	37.684
2015	37.223
2016	36.450
2017	35.620
2018	36.104
2019	38.835
2020	42.069
2021	41.843
2022	41.961
2023	41.140
2024	41.267
2025	40.789
2026	40.370
2027	39.947
2028	39.478
2029	38.362
