Year	Percent of GDP (Units)
1980	30.634
1981	20.984
1982	24.786
1983	24.329
1984	22.849
1985	25.439
1986	26.730
1987	28.752
1988	27.488
1989	27.925
1990	27.974
1991	24.395
1992	25.101
1993	22.462
1994	20.705
1995	20.268
1996	19.565
1997	19.857
1998	20.334
1999	20.256
2000	17.924
2001	18.039
2002	17.315
2003	16.451
2004	15.595
2005	13.593
2006	12.929
2007	13.395
2008	11.416
2009	10.955
2010	10.738
2011	13.443
2012	13.909
2013	15.666
2014	15.175
2015	15.845
2016	16.475
2017	18.228
2018	18.543
2019	18.625
2020	17.879
2021	19.870
2022	19.503
2023	20.915
2024	21.270
2025	21.635
2026	21.798
2027	21.356
2028	21.108
2029	21.084