Year	Percent of GDP (Units)
1980	19.501
1981	16.247
1982	17.381
1983	17.421
1984	19.634
1985	21.056
1986	22.908
1987	20.992
1988	21.057
1989	21.323
1990	20.798
1991	19.612
1992	18.940
1993	17.378
1994	18.734
1995	20.686
1996	20.064
1997	23.375
1998	22.506
1999	23.417
2000	24.341
2001	25.471
2002	24.343
2003	24.853
2004	25.736
2005	26.404
2006	27.630
2007	26.731
2008	26.907
2009	22.557
2010	24.642
2011	25.713
2012	25.748
2013	27.450
2014	29.015
2015	28.876
2016	29.549
2017	30.062
2018	29.881
2019	30.322
2020	30.602
2021	33.112
2022	37.248
2023	32.806
2024	31.245
2025	31.048
2026	30.890
2027	30.736
2028	30.628
2029	30.529