Year	billion cubic meters
1992	5119.789000000001
1993	5119.789000000001
1994	5119.789000000001
1995	5119.789000000001
1996	5118.889
1997	5119.789000000001
1998	5119.789000000001
1999	5119.789000000001
2000	5119.789000000001
2001	5119.789000000001
2002	5119.789000000001
2003	5119.789000000001
2004	5119.789000000001
2005	5119.789000000001
2006	5128.196000000001
2007	5128.196000000001
2008	5128.196000000001
2009	5128.196000000001
2010	5128.196000000001
2011	5128.196000000001
2012	5128.196000000001
2013	5128.196000000001
2014	5128.196000000001
2015	5128.196000000001
2016	5128.196000000001
2017	5128.196000000001
2018	5128.196000000001
2019	5128.196000000001
2020	5128.196000000001