Car Title Loan Statistics Reported by State of California:

Growth in auto title secured consumer loans slowed in 2015.
The number of such loans originated last year went up 9.5 percent, to 116,444 from 106,373 in 2014.
By comparison, the year-over year growth rate in the number of loans in 2014 was 16.2 percent.
The aggregate principal of auto title loans in 2015 increased 10.9 percent from 2014, to $423.5 million from $381.9 million.
That compared to a 14.1 percent growth rate in 2014.
In 2015, more than half of the loans valued at $2,500 to $4,999 carried annual percentage rates (APR) of 100 percent or higher.
Licensees originated 535,585 such loans, and 293,248 – or 54.7 percent – had APRs of 100 percent or higher.
This was the largest category of consumer loans, as measured by number originated.
Not sure: What is a Car Title Loan?

And an analysis of the California title loan volume during the past 10 years:

Average APR fees charged

Car Title Loan Statistics & Profits in California