Year	% of GDP
1965	8.201385452746166
1966	9.571788413098236
1967	10.224632068164214
1968	10.28176898675126
1969	14.6387345019239
1970	13.092798594847777
1971	11.722419928825623
1972	11.07758903390831
1973	10.340143447076724
1974	9.090909090909092
1975	9.79794559205328
1976	9.813594676025561
1977	9.594308786771775
1978	12.75987343255596
1979	18.014011109626434
1980	24.254813834984294
1981	22.53161578730663
1982	25.60813398093472
1983	24.16016315655299
1984	21.12770413539214
1985	18.900692840646652
1986	18.215451820319377
1987	17.555649314010054
1988	16.738294095917684
1989	15.857255717750931
1990	17.99654426571862
1991	18.361465844848194
1992	20.31752973902084
1993	21.079339024951707
1994	23.59744009504666
1995	22.05543209358883
1996	20.853425470754875
1997	20.999200244419683
1998	21.783600167389334
1999	24.098274535404894
2000	24.76551243762106
2001	18.992355829694233
2002	18.262136628136684
2003	17.4987434621623
2004	20.186135626764543
2005	19.525461292524163
2006	21.267099514067542
2007	19.9537931219486
2008	19.332792525056217
2009	17.343912768057695