Amen. The question then becomes whether that number will increase or lessen as time goes by.
If we take the long view of history (which is the truer perspective because it simply contains more history than the short view and thus reveals a sense of direction) we can see a tangible, positive trend from 100 Christians 2,000 years ago to one billion Christians today.
How is that a downward trend?
Not to be all gloom and doom, but we have moved into a post modernist age. In the modernist period there was a belief in absolute truth. The focus may have been on scientific means of finding the truth, but at least you could argue with someone who would agree that there are absolutes.
In the post modernist age we don't have any absolutes other than feelings. You must not criticize others behavior or beliefs because it might hurt their feelings. I think this clearly a downward trend. The correction might be the muslim threat, once people realize what the enemy is.