Year	% of GDP
1987	52
1988	48.148148148148145
1989	53.57142857142857
1990	50
1991	44.06779661016949
1993	32.734530938123754
1997	74.01274077407741
1998	76.4395605573419
1999	75.75885814011468
2000	36.48066819835344
2001	52.33111912356122
2002	45.70304597701149
2003	56.83872232977022
2004	62.130239772419394
2005	46.589768210066616
2006	32.266189491662544
2007	36.07867370370371
2008	37.30051485748939
2009	14.251484265157696
2010	5.044775644013549
2011	7.793501290283862
2012	15.077921032149913