The Wrestling Observer Newsletter has provided a breakdown of WWE Pay Per View buyrates for 2012 so far including both the worldwide and domestic figures. Here is how things stand as of June.

Royal Rumble: 483,000 worldwide with 299,000 domestic
Elimination Chamber: 194,000 worldwide with 138,000 domestic
Wrestlemania 28: 1,217,000 worldwide with 713,000 domestic
Extreme Rules: 263,000 worldwide with 154,000 domestic
Over the Limit: 167,000 worldwide with 120,000 domestic
No Way Out: 194,000 worldwide and 107,000 domestic

2012 Totals (so far) = 2,518,000 million worldwide (1,531,000 domestic)

Comparison totals from the last two years to this same point:

2011: 2,349,000 million worldwide (1,370,000 domestic)
2010: 2,214,000 million worldwide (1,235,000 domestic)