question: Which country has more than 0 in 2012 and 2009, 0 in 2008 and more than 0 in 2004?
answer: SELECT country FROM table_name_18 WHERE 2012 > 0 AND 2009 > 0 AND 2008 = 0 AND 2004 > 0
context: CREATE TABLE table_name_18 (country VARCHAR)