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Historical Values
Year Value
1993 20 km2 (1989 est.)
1994 20 sq km (1989 est.)
1995 20 sq km (1989 est.)
1996 20 sq km (1989 est.)
1997 20 sq km (1993 est.)
1998 20 sq km (1993 est.)
1999 20 sq km (1993 est.)
2000 20 sq km (1993 est.)
2001 20 sq km (1993 est.)
2002 30 sq km (1998 est.)
2003 30 sq km (1998 est.)
2004 30 sq km (1998 est.)
2005 30 sq km (1998 est.)
2006 30 sq km (2003)
2007 30 sq km (2003)
2008 30 sq km (2003)
2009 30 sq km (2003)
2010 30 sq km (2003)
2011 40 sq km (2008)
2012 40 sq km (2003)
2013 30 sq km (2003)
2014 30 sq km (2003)
2015 30 sq km (2003)
2016 35 sq km (2012)
2017 35 sq km (2012)
2018 35 sq km (2012)
2019 35 sq km (2012)
2020 35 sq km (2012)
2021 35 sq km (2012)
2022 35 sq km (2012)
2023 35 sq km (2012)
2024 35 sq km (2012)
2025 35 sq km (2012)