You have the habit of buying $1,000 in government bonds each year on December 31. If you started that habit in December 2013, and the rates of interest for those bonds have been 4% during 2014, 3% during 2015, 4% during 2016 and 5% during 2017, how much was your total bond investment worth at the end of 2017? (just after buying the bonds for that year)?