Year	% of GDP
2001	21.51052091978714
2002	26.799372891823843
2003	19.545088099222365
2004	28.67154346388142
2005	21.45222621667077
2006	17.76241890609813
2007	18.4733774881069
2008	15.30373258437476
2009	13.879470889196213
2010	10.75903458340167
2011	10.176650005462497
2012	11.654666988832785
2013	10.876953625059063
2014	12.764755103564045
2015	14.89587147423424
2016	17.151274400945795
2017	16.039661641592705
2018	16.422024434238814
2019	16.227108690961465
2020	17.795000340740156
2021	16.13213895812098