It also come to my mind that different commodities will telll different stories.
chewing gum- was 1 DM over most of time .
In that sense
01.10.01 X
31.05. 04 5X
01.01.14 4x
1today 8-9x
But as I wrotte it happened that best gold ratio also refflects best part of carrier... work at challenge airport enviroment coupled with living in grreat city with more than great salary ( when compared to local standard) ...