If History Repeats It's Self: Part 3 Vault

Next I'm going to analyze the vault final, to use history to try and predict these podiums in London.
Tianjin 1999
Gold-Elena Zamolodchikova [RUS]
Silver-Simona Amanar [ROM]
Bronze-Maria Olaru [ROM]
Sydney 2000
Gold-Elena Zamolodchikova [RUS]
Silver-Andreea Raducan [ROM]
Bronze-Ekaterina Lobazniouk [RUS]
Anaheim 2003
Gold-Oksana Chusovitina [Uzbekistan]*
Silver-Kang Yun Mi [PRK]
Bronze-Elena Zamolodchikova [RUS]
*I couldn't find the country codes for Uzbekistan, so if you know them, please comment!*
Athens 2004
Gold-Monica Rosu [ROM]
Silver-Annia Hatch [USA]
Bronze-Anna Pavlova [RUS]
Stuttgart 2007
Gold-Cheng Fei [CHN]
Silver-Hong Su Jong [PKR]
Bronze-Alicia Sacramone [USA]
Beijing 2008
Gold-Hong Un Jong [PKR]
Silver-Oksana Chusovitina [GER]
Bronze-Cheng Fei [CHN]
Tokyo 2011
Gold-Mckayla Maroney [USA]
Silver-Oksana Chusovitina [GER]
Bronze-Phan Thi Ha Thanh [VIE]
Using averages we can predict that our top three for Tokyo will end up around these places come London.
McKayla Maroney [USA]-28
Oksana Chusovitina [GER]-6**
Phan Thi Ha Thanh [VIE]- 5
Again, this really proves nothing, just that gymnastics is a crazy sport, where literally anything can happen.  Only time will tell what will happen in London, but all I can say is, let the London countdown begin today, 30 days left. 
**This average is a little messed up due to Hong Su Jong [PKR] being suspended for 2 years after being tested positive for an illegal substance, so this average is only added and divided by 2 numbers, not 3 like the others**