Year	Percent of GDP (Units)
1980	28.040
1981	25.822
1982	23.970
1983	24.684
1984	29.364
1985	29.240
1986	22.220
1987	22.599
1988	18.583
1989	18.732
1990	28.635
1991	33.233
1992	29.834
1993	27.503
1994	24.995
1995	24.191
1996	25.560
1997	28.054
1998	23.455
1999	24.432
2000	37.097
2001	41.399
2002	40.221
2003	44.357
2004	47.039
2005	50.256
2006	53.611
2007	55.747
2008	56.641
2009	47.832
2010	51.056
2011	49.789
2012	47.965
2013	46.277
2014	44.544
2015	38.734
2016	39.547
2017	39.174
2018	40.259
2019	38.295
2020	33.182
2021	38.475
2022	44.429
2023	40.795
2024	38.738
2025	36.626
2026	35.335
2027	34.703
2028	34.348
2029	33.934