Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
1985	100.0
1995	166.7	166.7	166.7	166.7	166.7	166.7	166.7	166.7	170.0	170.0	170.0	170.0
1996	170.0	170.0	170.0	170.0	170.0	170.0	170.0	170.0	173.1	173.1	173.1	173.1
1997	174.8	174.8	174.8	177.7	177.8	177.8	181.9	181.9	183.0	183.0	183.0	183.0
1998	183.1	183.1	183.1	183.1	183.2	183.2	187.0	187.0	187.0	187.0	187.0	187.0
1999	187.1	187.1	187.1	199.1	199.2	199.2	202.0	202.0	209.8	209.8	209.8	209.8
2000	209.9	209.9	209.9	209.9	210.0	210.0	210.3	210.3	210.3	256.1	256.1	256.1
2001	256.4	256.4	256.4	261.1	261.1	261.1	271.4	285.7	285.7	295.7	295.7	295.7
2002	296.1	296.1	293.5	293.5	293.5	293.5	305.0	305.0	305.0	305.0	305.0	305.0
2003	305.0	305.0	305.0	313.9	313.9	313.9	313.9	313.9	313.9	313.9	313.9	313.9
2004	321.2	321.2	321.2	321.2	321.2	321.2	327.4	327.4	327.4	332.1	332.1	332.1
2005	333.3	338.0	338.0	338.0	338.0	338.0	338.1	338.1	338.1	346.1	346.1	346.1
2006	347.1	347.1	347.1	357.1	357.1	357.1	357.3	357.3	357.3	364.2	364.2	364.2
2007	365.9	365.9	365.9	365.9	365.9	365.9	374.8	374.8	374.8	374.8	374.8	374.8
2008	385.1	385.1	385.1	385.1	385.1	385.1	385.4
2009	385.9