Year	% of GDP
1961	16.102470265324794
1962	16.20926243567753
1963	17.410714285714285
1964	18.30520909757887
1965	18.027985681744223
1966	16.78602119736465
1967	17.368149754525923
1968	18.859644769241743
1969	18.915082858627734
1970	18.476749049835348
1971	21.36995624051649
1972	31.209049452956123
1973	44.87811304252761
1974	46.88448596302455
1975	39.97878992569719
1976	41.773731167506355
1977	44.97497112052368
1978	41.93643276124267
1979	45.47960642658297
1980	43.18248346115567
1981	38.240542469664526
1982	36.83398124857077
1983	36.19603267211202
1984	39.44281556250532
1985	42.114597495375705
1986	43.579671888970964
1987	43.166452130695866
1988	43.25100154569256
1989	40.64747020389402
1990	40.62479682725441
1991	42.26481029509652
1992	47.84986976083353
1993	52.643259846725975
1994	53.53460752581234
1995	61.03898655302113
1996	59.404507925294716
1997	49.15752302389966
1998	54.04148982520888
1999	63.11836387938651
2000	66.17835925142258
2001	65.32996739224531
2002	60.91581056153748
2003	69.41796632379052
2004	72.16404960289475