On Feb 12, 6:00 pm, "John B" wrote:
In 1992, a monthly z1-6 Travelcard cost £91.40. The same card now
costs £165.20. [1]

Based on inflatiion (RPI), £91.40 in 1992 is the same as £126.71 in
2005. As a share of median earnings, £91.40 is the same as £152.12 in
2005. And as a share of GDP per capita, £91.40 is the same as £174.94
in 2005 (this is much higher than the earnings figure because of the
increase in income inequality...) [2]

Trending things forward to mid-2007, inflation has been running at
about 2.5% for 2 years, so the figure now would be £133. Earnings
growth has been running at about 5% (including inflation) so the
figure would be £168ish.

Thats all very fascinating and I'm sure you and your Casio had a great
time. What I can tell you is that my monthly travelcard cost me about
95 quid 3 years ago (which is as far back as I can remember, I've been
using the tube to go to work on and off for 10 years) , this month its
over 120. For 3 years with inflation of say 3% that 95 quid should now
be 95 * 1.03 ^ 3 = 103.80. So where has that other 17 quid come from
then?

B2003