Month	Year	Rate
1	2011	47.7
2	2011	55.7
3	2011	61.4
4	2011	61.2
5	2011	61.5
6	2011	67.6
7	2011	69.9
8	2011	66.2
9	2011	63.3
10	2011	63.1
11	2011	55.7
12	2011	47.6
1	2012	49.4
2	2012	57.4
3	2012	63.8
4	2012	61.8
5	2012	63.5
6	2012	70.3
7	2012	70
8	2012	67.8
9	2012	63.4
10	2012	64.4
11	2012	56.5
12	2012	49.1
1	2013	51
2	2013	58.5
3	2013	63.7
4	2013	63.8
5	2013	64
6	2013	69.9
7	2013	71.1
8	2013	69.2
9	2013	63.4
10	2013	64.7
11	2013	57.4
12	2013	50.2
1	2014	52.2
2	2014	60.3
3	2014	65.3
4	2014	65.7
5	2014	67
6	2014	71.7