The primary reason for this column is to guide married couples to have blissful sex lives. So, I have gathered some facts about the patterns of male and female sex drives as established by researchers and sex therapists. However, couples should bear in mind that individual sex drive may vary from these norms. According to the National Opinion Research Centre, the average couple reports having sex 66 times a year. Couples under age 30 say they have sex an average of 109 times a year. The average number drops to 70 times per year for 40-somethings and 52 times a year for couples in their 50s.