price of btc on 3/13/2012
best performing in 1983 - 1988
price of btc on 2/22/2012
best performing in 1982 - 1988
price of btc on 2/15/2012
best performing in 1981 - 1988
price of btc on 2/6/2012
price of btc on 1/17/2012
price of btc on 12/6/2011
price of btc on 12/2/2011
best performing in 1980 - 1988
best performing large stocks january 2005 to july 2005
dow jones since jan 1 201
price of bitcoin in 201/
bitcoin july 15, 2012
