Year	Percent of GDP (Units)
1990	18.758
1991	23.053
1992	21.641
1993	21.526
1994	22.380
1995	27.717
1996	24.343
1997	31.104
1998	32.384
1999	26.611
2000	31.429
2001	31.901
2002	29.447
2003	29.002
2004	27.867
2005	28.745
2006	29.807
2007	27.451
2008	29.923
2009	29.368
2010	25.788
2011	23.483
2012	30.154
2013	31.605
2014	29.735
2015	21.136
2016	17.138
2017	16.414
2018	16.918
2019	19.594
2020	17.617
2021	14.741
2022	18.416
2023	19.852
2024	18.798
2025	17.488
2026	17.277
2027	17.120
2028	17.014
2029	17.038