Year	% of GDP
1960	13.706369913349972
1961	14.42436222232007
1962	16.305025385505637
1963	12.418360772164986
1964	11.744025608164495
1965	10.334590479472816
1966	12.52938675742736
1967	12.264301989373712
1968	13.90588681556604
1969	15.972017602447398