“…Thus, in our study, a recalculation was made to obtain a single common index with the base of 100 established in December 1949 (see Appendix for more details). For the period from 1949 to 1990, the data are taken from the study of Gallais-Hamonno and Arbulu (1995). From 1990, the data are available on the Insee website 15 In order to have a comparison between the price of gold and the CPI, we transform the price of gold into an index with the base of 100 from December 1949 (see Appendix for more details).…”