Year	Percent of GDP (Units)
1980	18.340
1981	18.962
1982	15.629
1983	13.544
1984	14.429
1985	18.378
1986	17.352
1987	22.278
1988	24.535
1989	25.521
1990	19.763
1991	19.838
1992	20.943
1993	21.151
1994	21.826
1995	14.865
1996	14.466
1997	14.128
1998	14.116
1999	12.923
2000	14.855
2001	14.297
2002	15.604
2003	17.250
2004	19.251
2005	18.515
2006	18.789
2007	19.622
2008	19.520
2009	17.039
2010	17.875
2011	18.629
2012	17.656
2013	18.118
2014	16.050
2015	13.889
2016	13.270
2017	13.398
2018	12.237
2019	11.886
2020	14.205
2021	16.747
2022	15.616
2023	14.770
2024	14.502
2025	14.225
2026	13.877
2027	13.746
2028	13.587
2029	13.383