Entering 2017, the USD had been up four years running on a broad trade-weighted basis with 8.6% gains in 2014, 10.7% appreciation in 2015 and a more modest 3.0% move in 2016.
That last year was a less dramatic move, but from May 2nd lows to the 15+ year peak on January 7th, the buck was up almost 9.3% or 14.5% at an annual pace.
Unfortunately for greenback bulls, things have gone wildly off-script since.