Year	% of GDP
1970	8.415788353941425
1971	8.812029961142784
1972	10.395719230918258
1973	11.881410052048937
1974	19.145860235724577
1975	14.353419506422219
1976	14.913097938018174
1977	16.264535813953486
1978	22.556587449541286
1979	24.296038286032275
1980	43.15782370105531
1981	23.12295625680087
1982	25.06955737693655
1983	26.291670038999115
1984	22.786050368656934
1985	27.021995683354337
1986	24.562001370589574
1987	28.24406305362955
1988	19.154392726444776
1989	27.555765420332545
1990	13.24947565096183
2013	12.46592132885143
2014	11.750945632021994
2015	11.580467777134409
2016	11.495072420785636
2017	12.768182485292431
2018	15.322527665987785
2019	14.773080345710573
2020	15.649615855324273
2021	19.0057381552324
2022	25.90214680863291
2023	25.348333808080277