Partly as a result of Proposition 13, which severely limits property tax increases, California has come more and more to rely on personal income taxes for its revenues; income taxes have increased from 18 percent of the state's general fund in 1962 to 48 percent by 2002.
have increased from 18 percent of the state's general fund in 1962 to 48 percent by 2002
have increased from 18 percent of the state's general fund in 1962 to being up to 48 percent by 2002
have increased from 18 percent of the state's general fund in 1962, and by 2002 were up to 48 percent
increased from 18 percent of the state's general fund in 1962, and by 2002 were 48 percent
increased from 18 percent of the state's general fund in 1962 to 48 percent by 2002