In the light of your findings, comment on the excerpt below from The Economist:

Buttonwood 4-10 March 2017.

"If there is one aspect of the current era sure to obsess the financial historians of

tomorrow, it is the unprecedented low level of interest rates. Never before have deposit

rates or bond yields been so depressed in nominal terms, with some governments even

able to borrow at negative rates. It is taking a long time for investors to adjust their

assumptions accordingly. Real interest rates (i.e., allowing for inflation) are also low.

As measured by inflation-linked bonds, they are around minus 1 % in big rich

economies."