Year	Percent of GDP
1997	20.972
1998	20.133
1999	18.893
2000	17.8
2001	15.812
2002	18.105
2003	17.52
2004	18.672
2005	18.794
2006	19.99
2007	20.516
2008	20.167
2009	19.885
2010	19.995
2011	18.242
2012	22.312
2013	21.919
2014	21.029
2015	22.811
2016	23.957
2017	24.872
2018	23.658
2019	23.094
2020	23.166
2021	23.232
2022	23.215
2023	23.423
2024	23.363