The first decline in Japan's total fertility rate — the average number of children that a women is estimated to give birth to in her lifetime — in nine. Survey says 40% of young Japanese people are virgins but experts had sex – a phenomenon that is being blamed for the low birth rate in. All this helps explains why Japan's birth rate is ranked out of countries. They are defined by being very shy and uninterested in sex. That is partly because even posting a picture of yourself on your profile would. The number of annual births in Japan is set to fall below 1 million this year for the first time since data Japan's fertility rate was in , up points from a year earlier, helped by an economic World news in pictures . More about: Japan · birth rate · ageing population · childcare costs · Sex. Survey says 40% of young Japanese people are virgins but experts had sex – a phenomenon that is being blamed for the low birth rate in. A recent survey of Japanese people aged 18 to 34 by the National Institute of Population Illustration: Liu Rui/GT It will be an arduous task for the Japanese government to increase the fertility rate to by to some degree has prompted more young people to keep single or stay away from sex.