The dollar has fallen to its lowest level on the US Dollar Index (DXY) since December 2014:
The recent peak in the strength of the petro-dollar was also marked by a low of $40.59 for a barrel of oil in January 2016, and it has been on a clear march higher for the past six months.
And, of course, many readers of this site are well aware of how the dollar has weakened against cryptocurrencies this past year. Bitcoin began 2017 at $1,000. After peaking above $20,000 per bitcoin, today you need over $10,000 to buy one bitcoin.