Year	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
1997	109.5	107.1	111.8	109.6	105.2	106.4	109.1	97.3	110.5	118	113	109.9
1998	107.4	108.4	120	109.7	105.2	111.4	109.8	98.7	112.2	115.1	114.8	109.8
1999	104.3	106.9	122.2	107.4	105.3	112.7	107.9	104.5	116.3	115.6	121.4	112.7
2000	107.1	114	125.8	106.4	113.9	115.7	107	109	113.5	118.1	122.5	109.3
2001	113.5	109.9	122.2	107.6	112.2	110.6	107.7	107.5	108.9	117.6	117.2	105.7
2002	110	107.1	114.6	111.5	112.9	103	108.8	102.3	109.9	116.6	113.8	106.7
2003	108.2	106.2	114.7	107.1	106.4	107.4	109.2	99.6	111.2	117.1	111.2	109.5
2004	107.2	107.1	122	109.4	106.2	111.5	106	100.9	111.1	111	116.5	109.6
2005	104.9	106.6	115.3	109.2	108.7	111.4	104.8	103.8	110.4	110.1	116	107.6
2006	108	106.8	120.8	104.3	110.6	111.3	104.4	105.1	110.3	114.4	117.3	104.7
2007	111.4	107.2	118	106.8	112.6	108.5	106.7	104.6	106.5	117	116.9	105.7
2008	111	110.7	111.5	111.5	107.6	106.1	106.2	98.3	108.1	111.5	103.3	100.7
2009	96.8	94.9	104.3	98.3	94.7	99	98.1	87.4	98.7	101.8	101.8	98
2010	95.4	96.9	111	99.9	97.6	101.3	97.9	94.1	103.2	103	107.6	102.2
2011	98.2	97	111.4	96.5	99.5	102.7	96.2	95.3	101.6	100.6	104.3	96.6
2012	97.1	98.3	106.2	94.6	99.8	96.2	97.1	93.5	92.6	99.3	100.4	92.4
2013	95.9	93.2	100.8	96.9	98.5	95.7	98.1	90.1	97.5	102.6	100.6	96.1
2014	97.9	96.5	106	98.5	98.8	99.1	100.5	90.3