Year	Percent of GDP (Units)
1981	46.703
1982	24.987
1983	32.072
1984	29.028
1985	21.782
1986	22.231
1987	24.419
1988	23.975
1989	24.409
1990	22.776
1991	24.181
1992	25.253
1993	27.181
1994	26.767
1995	25.781
1996	26.048
1997	28.280
1998	29.973
1999	29.364
2000	29.314
2001	31.955
2002	33.293
2003	31.990
2004	32.345
2005	33.183
2006	29.834
2007	32.653
2008	35.333
2009	33.204
2010	31.500
2011	35.356
2012	36.038
2013	38.438
2014	43.257
2015	44.585
2016	39.929
2017	38.598
2018	37.094
2019	36.066
2020	37.976
2021	34.398
2022	35.997
2023	35.345
2024	35.483
2025	34.849
2026	34.336
2027	34.098
2028	33.913
2029	33.779