Virginity there still needed?

The survey results in the local newspaper 'Hindustan Times' which presents the results quite surprising for me: that rata2 Indian girl that was no longer a virgin at the age of 18 years.
surprised me because it generally does not care. proved Indonesian student friends in India who very rarely have a girlfriend india girls. reverse-coed coed who we are not little men going out with India. indo women means that "more easygoing" than Indian women. unfortunately until now there has been no survey of Indonesian girls in the homeland. how their average age when losing virginity?
Virginity is actually still is not it necessary for men indo? whether it includes the requirement (in the Indonesian man's heart) when Indonesia will marry the woman?
warm regards,