Are we still up for hanky panky?

Yes - according to the latest statistics from the Kinsey Institute - but not as often once we are 50+. An excellent article in the Daily Mail by Diana Appleyard gives us the facts. According to the most recent Sexual Wellbeing Survey, the average British person has sex 127 times a year, and the average married person has sex 98 times a year.
The Kinsey Sex Institute states that the average 18 to 29-year-old has sex 142 times a year; 30 to 39-year-olds 86 times a year; 40 to 49-year-olds 69 times a year; and the over-50s have sex 52 times a year. 

Diana then gives us many reasons as to why this need not be the case with some interesting case studies. Perhaps alarmingly 1 in 20 couples are virtually celibate, rising to one in 10 among the over-45s.