"Figure 14.1: Estimates of discovered oil reserves, 1995 to 2013","" "United Kingdom","" "","" "Notes","" "Unit","Million tonnes" "","" "","Proven","Probable","Possible" "1995","605","765","520" "1996","665","690","670" "1997","690","700","625" "1998","685","575","540" "1999","665","455","545" "2000","630","380","480" "2001","605","350","475" "2002","595","325","425" "2003","571","286","410" "2004","533","283","512" "2005","516","300","451" "2006","479","298","478" "2007","452","328","399" "2008","408","361","360" "2009","378","390","343" "2010","374","377","342" "2011","413","374","319" "2012","405","405","253" "2013","404","342","338"