Total Income is Higher than 2018

My Total Income shown in Turbotax for 2019 is about 30 percent higher than Turbotax shows for 2018.  Entries for both years are near mirror images.  There are slight increases for 2019 in amounts entered, due to COLA increases but not near  that amount.  Has IRS changed how Total Income is calculated or has Turbotax changed calculations or what can explain this?