A couple of weeks ago, both Louise Norris and I crunched the South Carolina data and came up with different estimates of the weighted average requested 2016 rate hikes for the ACA-compliant individual market. She used a worst-case scenario and estimated it to be around 16.8%; I took a slightly more optimistic approach and came up with 15.2%.
As you can see, even though there are only 5 carriers operating on the ACA exchange and another 5 offering policies off-exchange only, the overall average is still 15.9% either way: