Dear Erik, 

I was trying to get the most recent numbers on this for you, and all I could come up with were the final numbers for 1997. They are interesting so I'll give you a little more than you asked for: 

There are 1,005,254,000 (just over a billion)) Catholics in the world now. 49.32% of them are in America, 28.18% in Europe, 11.23% in Africa, 10.47% in Asia, and .8% in Oceania. 

There are 404,000 priests (of whom 140,000 are religious priests), 819,000 nuns, and 58,000 male religious. 

There are 108,517 seminarians worldwide (up 69% from 20 yrs ago), a third of them in the Americas. 

God bless.