Year	Percent of GDP (Units)
1980	10.891
1981	4.561
1982	11.889
1983	20.488
1984	27.677
1985	23.142
1986	20.664
1987	21.723
1988	22.718
1989	21.669
1990	18.454
1991	20.708
1992	21.251
1993	23.239
1994	23.074
1995	25.579
1996	27.321
1997	25.604
1998	25.208
1999	21.051
2000	24.234
2001	24.256
2002	22.508
2003	23.615
2004	26.453
2005	28.040
2006	28.580
2007	30.272
2008	31.898
2009	32.962
2010	38.953
2011	27.810
2012	28.603
2013	29.677
2014	30.986
2015	31.277
2016	28.241
2017	37.325
2018	39.548
2019	41.379
2020	30.440
2021	35.164
2022	37.417
2023	33.551
2024	33.968
2025	36.525
2026	35.519
2027	34.614
2028	33.450
2029	32.419