What percent of, say, Merck's annual budget goes towards paying out due to court cases they have lost where tort reform might make a difference? (I mean, ignor

What percent of, say, Merck's annual budget goes towards paying out due to court cases they have lost where tort reform might make a difference? (I mean, ignore any lawsuits surrounding business practices, or from a competitor) Or pick any other pharma giant. I tried to google it myself but didn't find anything clear on the matter.