Year	Percent of GDP
1997	13.589
1998	12.995
1999	13.825
2000	14.538
2001	15.733
2002	15.845
2003	19.014
2004	17.078
2005	15.144
2006	16.159
2007	16.273
2008	18.286
2009	16.248
2010	15.799
2011	15.947
2012	20.118
2013	17.691
2014	17.516
2015	17.55
2016	17.423
2017	18.097
2018	18.003
2019	18.255
2020	18.505
2021	18.502
2022	18.537
2023	18.61
2024	18.54