What percentage of sinners, do you believe, exist throughout the world?

Many years ago, I use to believe that only 15% of the worlds population were sinners. That 85% of the population were honest, decent people. Today, i am having second thoughts and wondering if the percentages have changed? I just read where 2,000 fetuses were discovered in a Thai Buddist Temple and wonder whether these babies were aborted legally or illegaly? Question: What percentage of the worlds population, do you believe are sinners, compared to 50 years ago?

Source: Associated Press