I take it this includes the over 1.5 million Christians in prison in the US.
Please read this:
According to the (BJS) Bureau of Justice Statistics 7,225,800 people at year end 2009 were either in jail or prison or were on probation, about 3.1% of adults in the U.S. resident population.2,292,133 were incarcerated in U.S. prisons and jails at year end 2009.
Given that 80% of people in the US profess to being Christians that would tell us that 1,650,000 million Christians are in Prison, let's say that half of those who say they are Christians are not really Christians, that still leaves at least 800,000 HEALTHY & HAPPY God fearing Christians behind bars.
I honestly wish I had a dream world I could pop into whenever the need arose, I envy you.