Year	Percent of GDP (Units)
1985	18.891
1986	19.489
1987	20.472
1988	20.219
1989	19.921
1990	16.785
1991	17.545
1992	17.637
1993	21.296
1994	18.719
1995	18.887
1996	18.258
1997	17.939
1998	20.792
1999	22.496
2000	19.754
2001	18.964
2002	19.980
2003	19.316
2004	19.912
2005	19.281
2006	19.407
2007	20.589
2008	21.626
2009	21.636
2010	21.751
2011	21.502
2012	20.180
2013	20.309
2014	20.328
2015	21.173
2016	21.275
2017	20.893
2018	22.088
2019	21.538
2020	21.560
2021	21.594
2022	21.834
2023	21.452
2024	21.077
2025	21.015
2026	21.127
2027	21.093
2028	21.073
2029	21.058