I could say 

month
2012 2013
  • January 345
  • February 109
  • March 218
  • April 173
  • May 155
  • June
  • July
  • August
  • September
  • October
  • November
  • December
2012 2013
  • January
  • February
  • March
  • April
  • May
  • June
  • July
  • August
  • September
  • October
  • November
  • December 246