Sorting the months by calender in splunk

Hi

how to sort the months according to the calender

This is the search query source="D:\AVERAGE_CLOSE_TIME.csv" NOT "Month"| stats avg(Avg_Close_Time) as "Average Close Time in Days" by Month

This is the output 1 Apr-12 29.000000 2 Aug-12 18.000000 3 Dec-12 22.000000 4 Feb-12 36.000000