Year	Percent of GDP (Units)
1990	18.717
1991	16.292
1992	13.865
1993	13.296
1994	12.628
1995	12.697
1996	11.979
1997	12.724
1998	10.595
1999	11.622
2000	12.657
2001	15.003
2002	14.563
2003	14.771
2004	13.019
2005	11.009
2006	13.215
2007	8.674
2008	10.085
2009	16.250
2010	20.511
2011	16.041
2012	20.041
2013	18.639
2014	20.208
2015	21.702
2016	16.136
2017	17.346
2018	16.034
2019	14.978
2020	17.131
2021	15.168
2022	14.535
2023	15.472
2024	16.439
2025	15.834
2026	16.209
2027	16.352
2028	16.285
2029	16.428