Year	billion cubic meters
2008	0.3379
2009	0.3379
2010	0.3379
2011	0.3379
2012	0.3379
2013	0.3379
2014	0.3379
2015	0.3379
2016	0.3379
2017	0.3379
2018	0.3379
2019	0.3379
2020	0.3379