I'm trying to make an income statement...for sales revenue out of this information what do I add up?

Sales Revenue Forecast:
June (actual) 24,000
July (actual) 20,000
August 28,000
September 52,000
October 44,000
November 76,000
December 96,000
January 22,000
February 32,000

do I add everything..for just August-December or what?