Imperial submitted a total of 1,257 staff across 14 units of assessment to the 2014 Research Excellence Framework (REF) assessment. In the REF results 46% of Imperial's submitted research was classified as 4*, 44% as 3*, 9% as 2* and 1% as 1*, giving an overall GPA of 3.36. In rankings produced by Times Higher Education based upon the REF results Imperial was ranked 2nd overall for GPA and <answer>8th</answer> for "research power" (compared to 6th and 7th respectively in the equivalent rankings for the RAE 2008).
How highly was Imperial ranked in "research power" in 2014?
8th