According to the U.S. Bureau of Labor Statistics, prices for parking fees and tolls were 55.93% lower in 1997 versus 2017.
Between 1997 and 2017: Parking and tolls experienced an average inflation rate of 4.18% per year. In other words, parking and tolls costing $5 in the year 1997 would cost $11.34 in 2017 for an equivalent purchase. Compared to the overall inflation rate of 2.13% during this same period, parking and tolls inflation was similar.
Raw Consumer Price Index data from U.S. Bureau of Labor Statistics for Parking fees and tolls: