Year	Percent of GDP (Units)
1980	22.862
1981	20.425
1982	19.765
1983	19.983
1984	20.306
1985	19.437
1986	20.310
1987	19.648
1988	20.779
1989	19.824
1990	19.964
1991	19.066
1992	18.299
1993	19.555
1994	19.891
1995	22.139
1996	22.378
1997	22.104
1998	21.389
1999	21.034
2000	20.592
2001	20.998
2002	21.073
2003	20.392
2004	20.781
2005	20.286
2006	20.482
2007	20.879
2008	18.984
2009	17.624
2010	17.285
2011	17.643
2012	17.559
2013	18.037
2014	18.869
2015	18.553
2016	20.209
2017	20.713
2018	21.133
2019	21.500
2020	21.584
2021	24.160
2022	21.636
2023	21.072
2024	22.595
2025	23.240
2026	22.763
2027	22.531
2028	22.458
2029	22.526