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Historical Values
Year Value
2008 20.8 cu km (2005)
2009 20.8 cu km (2005)
2010 20.8 cu km (2005)
2011 20.8 cu km (2005)
2012 20.8 cu km (2005)
2013 18.3 cu km (2011)
2014 18.3 cu km (2011)
2015 18.3 cu km (2011)
2021 18.3 billion cubic meters (2017 est.)
2022 18.3 billion cubic meters (2017 est.)
2023 18.3 billion cubic meters (2020 est.)
2024 18.3 billion cubic meters (2020 est.)
2025 18.3 billion cubic meters (2022 est.)