Year	Percent of GDP (Units)
1988	31.146
1989	30.529
1990	30.249
1991	30.270
1992	29.305
1993	29.412
1994	29.949
1995	31.086
1996	32.082
1997	32.323
1998	34.396
1999	36.876
2000	36.466
2001	35.598
2002	35.109
2003	35.947
2004	36.149
2005	36.287
2006	36.313
2007	35.781
2008	33.973
2009	33.186
2010	31.831
2011	31.783
2012	33.000
2013	33.549
2014	33.813
2015	34.459
2016	34.835
2017	35.021
2018	35.567
2019	34.457
2020	35.652
2021	35.357
2022	35.303
2023	36.189
2024	35.228
2025	33.865
2026	33.693
2027	33.782
2028	33.889
2029	33.969