Year	Percent of GDP
1997	19.937
1998	19.17
1999	17.14
2000	16.652
2001	16.778
2002	17.224
2003	15.777
2004	17.237
2005	17.377
2006	18.56
2007	19.979
2008	19.877
2009	18.5
2010	18.147
2011	14.248
2012	19.166
2013	19.679
2014	18.862
2015	19.988
2016	19.954
2017	20.365
2018	19.707
2019	20.047
2020	20.185
2021	20.344
2022	20.341
2023	20.513
2024	20.456