Year	% of GDP
1968	19.43007410097524
1969	19.34874647506901
1970	18.443179055101925
1971	21.379672487961233
1972	23.96786354490637
1973	32.40111290042827
1974	54.40108645742835
1975	43.49893085341453
1976	44.91081148448587
1977	39.65600319542732
1978	33.49939244242087
1979	39.736427105341015
1980	46.906125984615
1981	40.31184162204617
1982	28.337362372766112
1983	21.47905692530199
1984	19.553121571549003
1985	17.921395352702575
1986	10.381082184940519
1987	12.7852463248714
1988	12.304525602991715
1989	8.675267879753632
1990	22.292356341396513
1991	13.902932591506934
1992	18.100462691332215
1993	16.885300958342874
1994	19.131916079567
1995	21.28873491191903
1996	23.495467890214428
1997	23.918531890815416
1998	20.321630245921632
1999	27.06368832221474
2000	34.09456687187277
2001	31.592693850917325
2002	30.950000533683163
2003	34.04025201466464
2004	36.916091942504394
2005	42.047270311504775
2006	43.55969660182497
2007	42.18322528798715
2008	45.10073738145621
2009	34.53313325998466
2010	40.91195677566574
2011	44.0509831438966
2012	43.87665714787372
2013	41.47480135739509
2014	37.13584592038555
2015	28.981533668746966
2016	28.47832945510655
2017	31.061902312421953
2018	34.95325782977313
2019	32.43893427842125
2020	25.00650930534633
2021	31.645507711822834
2022	39.19684883912947
2023	35.11762376506098