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Cost of Living Index - how to calculate increase ( 13.3.1.L1 )
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Hire Purchase search when buying used car ( 13.5.2.L5 )
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Jersey Cost of Living Index / Retail Price Index ( 13.3.1. )
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Jersey Index of Average Earnings ( 13.3.1.L3 )
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PDF

LOCAL INFORMATION

13.3.1.L1
Jersey Cost of Living Index (RPI) - Quarterly figures and how to calculate increases over period of time, e.g. 3 years

Extent: Jersey
Updated 13 April 2017
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The most recent increase is shown at the foot of the table

NOTE:   The base was re-set to 100 in June 2000

You can use the excel calculator which can be accessed on on the gov.je website by clicking here or you can download the gov.je excel document by clicking here to calculate changes in RPI.

To find increase over a period when there has been a base change within the period being calculated - this example takes into account the resetting of base and has been calculated over a five year period

Example for September 1997 - September 2002

Take base for end of period and multiply by 1.716
Subtract the base from beginning of period
109.7 x 1.716 = 188.25
153.80
34.45
Calculate


Therefore percentage increase over the period (5 years)
34.45 x 100
153.8

= 22.40%

To find increase over a period when the base has not been reset within the period - this example is after base was reset in June 2000 so ignores the old base, it is over a period of three years

Example for September 2000 to September 2003

Take base from end of the period
Subtract the base from the beginning of the period
113.9
101.1
12.8
Calculate
Divided by the base from the beginning of the period

Therefore percentage increase over the period (3 years)
12.8 x 100
101.1

= 12.66%

NOTE: The percentage increase can be calculated over any period using the two formulas above, just check to see if there has been a base change within the period being calculated and use the appropriate formula.

QUARTER DATE CURRENT BASE ANNUAL INCREASE INCREASE OVER 3 YEARS
6/2000 OLD BASE - 171.6
NEW BASE - 100.0
4.4 12.97
9/2000 101.1 4.6 12.8
12/2000 101.6 4.0 12.85
3/2001 103.0 4.0 12.43
6/2001 103.9 3.9 12.13
9/2001 105.3 4.2 12.65
12/2001 104.7 3.1 11.80
3/2002 107.1 4.0 13.10
6/2002 108.3 4.2 13.11
9/2002 109.7 4.2 13.53
12/2002 109.8 4.9 12.35
3/2003 112.4 4.9 13.52
6/2003 112.9 4.2 12.90
9/2003 113.9 3.8 12.66
12/2003 114.2 4.0 12.40
3/2004 116.6 3.7 13.20
6/2004 118.3 4.8 13.86
9/2004 120.3 5.6 14.24
12/2004 120.3 5.3 14.90
3/2005 121.9 4.5 13.82
6/2005 122.6 3.6 13.20
9/2005 122.7 2.0 11.9
12/2005 123.0 2.2 12
3/2006 124.8 2.4 11
6/2006 126.2 2.9 11.8
9/2006 127.1 3.6 11.6
12/2006 127.5 3.7 11.6
3/2007 130.3 4.4 11.75
6/2007 131.6 4.3 11.24
9/2007 132.1 3.9 11.67
12/2007 133.3 4.5 10.80
3/2008 134.5 3.2 10.33
6/2008 139.0 5.6 13.37
9/2008 140.5 6.4 14.50
12/2008 137.7 3.3 11.95
3/2009 137.3 2.1 10.02
6/2009 138.5 -0.4 8.88
9/2009 139.6 -0.6 9.83
12/2009 140.0 1.7 9.80
3/2010 141.7 3.2 8.75
6/2010 142.4 2.8 8.21
9/2010 142.6 2.1 7.95
12/2010 143.2 2.3 7.43
03/2011 146.1 3.1 8.62
06/2011 148.8 4.5 7.05
09/2011 150.3 5.4 6.97
12/2011 150.4 5.0 9.22
03/2012 153.0 4.7 11.43
06/2012 153.3 3.0 10.69
09/2012 154.5 2.8 10.67
12/2012 153.5 2.1 9.64
03/2013 155.2 1.4 9.53
06/2013 155.6 1.5 9.27
09/2013 156.4 1.2 9.68
12/2013 156.4 1.9 9.21
03/2014 157.9 1.7 8.07
06/2014 158.1 1.6 6.25
09/2014 159.3 1.9 5.99
12/2014 158.5 1.3 5.38
03/2015 158.9 0.6 3.85
06/2015 159.6 0.9 4.10
09/2015 159.5 0.1 3.24
12/2015 160.0 0.9 4.23
03/2016 161.2 1.4 3.86
06/2016 162.0 1.5 4.11
09/2016 162.7 2.0 4.02
12/2016 163.0 1.9 4.21
03/2017 165.9 2.9 5.06