<prompt> Potential Support Ratio PSR is defined asNumber of persons aged 15 to 65 per children below 15 yearsNumber of person aged 15 to 65 per one older person aged 65 and younger person 15 yearsNumber of persons aged 15 to 65 per one older person aged 65 yearsNumber of persons aged 15 to 65 persons older person aged 60 and younger person 15 years  <response>: Number of persons aged 15 to 65 per one older person aged more than or equal to 65 years 