Year	Percent of GDP (Units)
1984	151.310
1985	143.752
1986	137.391
1987	129.398
1988	120.282
1989	113.936
1990	108.368
1991	104.075
1992	101.177
1993	95.918
1994	87.962
1995	77.864
1996	75.525
1997	71.054
1998	69.536
1999	64.624
2000	60.818
2001	53.046
2002	48.239
2003	44.498
2004	42.446
2005	39.865
2006	38.479
2007	35.616
2008	33.217
2009	31.730
2010	30.459
2011	27.668
2012	25.073
2013	10.277
2014	11.823
2015	14.274
2016	16.162
2017	18.934
2018	17.022
2019	21.229
2020	24.315
2021	26.276
2022	28.073
2023	33.232
2024	35.538
2025	36.257
2026	36.499
2027	35.833
2028	35.441
2029	34.786
