2014 saw a record number of billionaires - 1,645 - who had a record net worth of $6.4 trillion. Bill Gates topped Forbes' 2014 list with a net worth of $76 billion, while Carlos Slim Helú of Mexico followed closely with $72 billion. Warren Buffett came in fourth with $58.2 billion. Also, a record number of women made the 2014 list: 172 versus 138 in 2013. View the complete list to see who rose and fell since 2013.