No, I haven't because it is insignificant. However since you asked, I calculated the combination of STEEM and SBD burned over the last 5 days and compared it to the average STEEM created over the last 5 days. Since SBD is not being created currently, I don't need to factor in how much SBD is being created. The amount of STEEM and SBD burned comes out to 0.502192%

About half a percent