Year	Percent of GDP (Units)
1980	22.408
1981	20.440
1982	22.217
1983	10.251
1984	11.867
1985	10.110
1986	11.344
1987	4.132
1988	2.394
1989	12.848
1990	30.754
1991	26.725
1992	23.042
1993	24.218
1994	24.317
1995	28.488
1996	23.372
1997	23.335
1998	21.354
1999	20.570
2000	21.697
2001	23.494
2002	23.397
2003	15.406
2004	14.557
2005	16.162
2006	21.281
2007	26.337
2008	29.778
2009	27.067
2010	23.845