The budget allows that revenues will increase without increasing taxes as the economy improves. There are three different bars for each year(I do not have my printout in front of me and can not see the exact numbers on the bar chart). The Ryan bar has the debt at around 50% of GDP in 2040. The continuing current policy has debt ariund 120%. It is the Obama's new plans that have GDP at 194%.
On the decrease in entitlement spending (except for Medicare and Socila Security) these items should decrease. All welfare programs will become less necessary as the economy improves and more people move from chronic unemployment to having a job.