UnScramble this Word: e i l s f e d r?

Questions

every year, ---------- americans injure themselves while trying out bizarre sexual positions?

every year, 11,000 americans injure themselves while trying out ---------- sexual positions?

in the u.s., there is, on average, ---------- sex change operations per day?

more than half the american men surveyed in a recent poll admit to having sex with women they----------?

sex burns 360 ---------- per hour?