15
14
13
12
11
10
09
08
07
06
6%
5
4
3
2
1
0
US Federal Reserve's key interest rate
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
6%
5
4
3
2
1
0
US Federal Reserve's key interest rate
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
6%
5
4
3
2
1
0
US Federal Reserve's key interest rate