Year	Percent of GDP (Units)
1990	39.281
1991	34.946
1992	41.165
1993	37.732
1994	33.794
1995	32.413
1996	33.342
1997	35.598
1998	34.531
1999	30.315
2000	33.133
2001	36.939
2002	35.864
2003	33.116
2004	31.094
2005	28.151
2006	27.269
2007	29.453
2008	26.680
2009	37.066
2010	33.012
2011	32.581
2012	32.970
2013	35.187
2014	39.676
2015	39.883
2016	34.455
2017	32.067
2018	33.980
2019	33.677
2020	39.068
2021	31.693
2022	28.250
2023	32.282
2024	31.256
2025	31.299
2026	31.475
2027	30.910
2028	29.869
2029	28.981