Gov. Pat Quinn s unpopular tax increase began showing some positive progress for Illinois last month. The state collected almost $1.4 billion in personal income taxes in March, the Peoria Journal Star reports. That s 71 percent more than taxes collected in March 2010. Higher taxes that took effect this year have partial thanks for the returns, the Illinois Commission on Forecasting and Government Accountability says. Quinn signed the 67 percent increase into law on Jan.