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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 30 sq km (2008)
2012 30 sq km (2003)
2013 21 sq km (2003)
2014 21 sq km (2003)
2015 21 sq km (2003)
2016 30 sq km (2012)
2017 30 sq km (2012)
2018 30 sq km (2012)
2019 30 sq km (2012)
2020 30 sq km (2012)
2021 30 sq km (2012)
2022 30 sq km (2012)
2023 30 sq km (2012)
2024 30 sq km (2012)
2025 30 sq km (2012)