Year	billion cubic meters
2007	57.307
2008	57.307
2009	57.307
2010	57.307
2011	57.307
2012	57.307
2013	57.307
2014	57.307
2015	57.307
2016	57.307
2017	57.307
2018	57.307
2019	57.307
2020	57.307