Year	% of GDP
1970	100.35389725724329
1971	100.53012502965932
1972	98.53994855813586
1973	98.45476843260603
1974	103.04857221679016
1975	105.90486430495858
1976	100.48884972650127
1977	100.1612443285665
1978	96.22161060063948
1979	98.11596539814411
1980	100.84083548741718
1981	98.54204429033021
1982	99.89953975188655
1983	99.76545485005863
1984	97.95735129068463
1985	98.71748647952614
1986	98.14652353532293
1987	99.26457558036506
1988	99.51383548609934
1989	101.6812005914473
1990	101.06421574555569
1991	101.18413330418072
1992	99.35717487202473
1993	95.7565221449573
1994	94.71288939823029
1995	93.20033688824849
1996	93.9451230861162
1997	93.16198435116915
1998	92.67808821820476
1999	91.50934476346559
2000	91.40220753140528
2001	90.65533644937356
2002	90.9331519469849
2003	92.97721896025674
2004	93.43403167084493
2005	95.65296592930832
2006	95.13525393731528
2007	94.89394457748888
2008	96.133631894577
2009	97.68579398834643
2010	98.39909005384202
2011	100.56768250184345
2012	101.53006660465486
2013	101.05422350125536
2014	100.94974794221278
2015	100.5686306975424
2016	101.27759541739074
2017	99.95404350842462
2018	101.25545056583086
2019	99.84615897739496
2020	99.92354161940531
2021	99.96648900520219
2022	102.66841497719352
2023	100.30040522287258