CREATE TABLE table_74508 ("Region" TEXT, "2004" TEXT, "2005" TEXT, "2006" TEXT, "2007" TEXT, "2009" TEXT, "2010" TEXT, "2011" TEXT)

What is the 2005 Lukoil oil prodroduction when in 2007 oil production 91.100 million tonnes?
SELECT "2005" FROM table_74508 WHERE "2007" = '91.100'
SELECT "2005" FROM "table_74508" WHERE "2007" = '91.100'