According to the bureau of labor statistics the U.S. import price index declined 1.3% from November 2018 to November 2019. If American companies are paying 100% of the cost of tariffs levied how has this not been reflected in the cost of imports? What am I missing?

by NineteenEighty9

Source

Here’s what I’m referring to:

Prices for U.S. imports increased 0.2 percent in November, after decreasing 0.5 percent in October and rising 0.1 percent in September. The U.S. import price index declined 1.3 percent from November 2018 to November 2019. The 12-month decrease was the smallest over-the-year decline since the index fell 0.9 percent during the period ended May 2019.

U.S. trade deficit sinks 8% to 3-year low of $43.1 billion in November

Thanks in advance to those who respond!