Year	Percent of GDP (Units)
1997	24.982
1998	23.687
1999	23.690
2000	26.227
2001	30.126
2002	29.779
2003	32.150
2004	33.446
2005	34.068
2006	33.297
2007	32.157
2008	33.353
2009	36.711
2010	36.890
2011	38.343
2012	39.205
2013	38.895
2014	37.488
2015	35.941
2016	35.364
2017	34.514
2018	33.914
2019	32.725
2020	32.134
2021	30.239
2022	27.490
2023	25.035
2024	22.497
2025	20.291
2026	18.295
2027	16.463
2028	14.774
2029	13.273