Year	% of GDP
1999	24.08823063075143
2001	24.933718569410193
2002	21.28809791990871
2003	21.71398216418637
2004	22.0303268523132
2005	22.329027036037072
2006	27.75074635965919
2007	27.55448454379757
2008	27.221765360857898
2009	20.54317556361924
2010	22.55937518738337
2011	24.974206921323827
2012	23.42972241099809
2013	23.8259251824352
2014	23.52801006276953
2015	21.174771511191103
2016	20.360246469653603
2017	21.389014811670084
2018	21.651086185025683
2019	22.713141426329724
2020	21.38977906999419
2021	22.94069079654717