Year	Percent of GDP (Units)
1980	31.043
1981	29.582
1982	26.783
1983	22.798
1984	20.302
1985	20.586
1986	18.724
1987	28.134
1988	21.140
1989	22.669
1990	31.423
1991	31.551
1992	32.063
1993	29.471
1994	28.792
1995	23.294
1996	19.689
1997	17.751
1998	25.911
1999	22.908
2000	21.910
2001	22.507
2002	22.082
2003	23.780
2004	27.945
2005	30.626
2006	31.613
2007	32.914
2008	37.981
2009	34.694
2010	32.390
2011	35.273
2012	34.844
2013	37.470
2014	37.654
2015	32.759
2016	32.175
2017	32.354
2018	32.775
2019	34.268
2020	38.484
2021	40.795
2022	40.872
2023	38.395
2024	38.445
2025	38.937
2026	39.220
2027	40.059
2028	41.288
2029	41.840