Year	Percent of GDP (Units)
1980	24.761
1981	22.141
1982	18.841
1983	21.050
1984	23.247
1985	23.467
1986	23.837
1987	24.298
1988	24.842
1989	25.825
1990	24.374
1991	21.667
1992	19.229
1993	17.835
1994	21.419
1995	23.972
1996	23.869
1997	24.274
1998	25.096
1999	25.595
2000	26.722
2001	27.566
2002	26.500
2003	27.749
2004	27.782
2005	28.229
2006	31.332
2007	32.932
2008	32.301
2009	26.936
2010	28.799
2011	29.266
2012	28.060
2013	27.752
2014	27.717
2015	27.628
2016	26.946
2017	28.481
2018	28.488
2019	30.459
2020	30.962
2021	32.928
2022	34.331
2023	32.981
2024	32.765
2025	33.095
2026	33.026
2027	33.150
2028	33.122
2029	33.403