the following table gives the average monthly exchange rate

the following table gives the average monthly exchange rate between the U.s. dollar and the euro for 2006. It shows that 1 euro was equivalent to 1.210 u.s. dollars in Jan 2006. Develop a trend line that could be used to predict the exchange rate for 2007. use this model to predict the exchange rate for Jan 2007 and Feb 2007.
Jan 1.210
Feb 1.194
Mar 1.203
Apr 1.227
May 1.277
Jun 1.266
July 1.268
Aug 1.281
sep 1.273
oct 1.262
Nov 1.289
dec 1.320