Article referenced by parent only has data for state funds making up 16 percent of the total budget in 2004/2005.
Using that source no conclusions can be made for the following years. Only percentage of tuition (across all students) as a percentage of total budget is presented.
The phenomenon of out-of-state students significantly supplementing budget deficiencies that ordinarily would result in a necessary increase of tuition for in-state students only began around 2009/2010.
Quoting a newer article (~1 year ago) from the same source [1]:
>Out-of-state students currently pay about $23,000 more in tuition than California residents do, according to Stephen Handel, UC associate vice president of undergraduate admissions. After the UC Board of Regents’ approval of an 8 percent nonresident tuition increase in May, however, that number will jump to about $24,700 for the upcoming academic year.
>Revenue from nonresident students “helps to make up for the cutbacks in state support received over the years,” Handel said.
And another article (from early 2016) with a helpful graphic [2]:
>In the fall, nonresident students made up 15.54 percent of all undergraduates in the university and 24.52 percent of UC Berkeley undergraduates. According to an email from UC spokesperson Claire Doan, the university’s enrollment of non-Californians, who pay higher tuition, helps make up for a lack of state funding.
>“The increase in out-of-state enrollment coincided with budget cuts that related to the Great Recession,” said Hans Johnson, a senior fellow at the Public Policy Institute of California. “Those out-of-state students help to provide funding for in-state students.”
And finally the UC system 2015-2016 budget document. See on page 40 the section for non-resident supplemental tuition:
>All general campuses (except Merced) have sought to increase their numbers of
national and international students without replacing funded California residents. UC’s priority continues to be access for
eligible California residents for whom the State has provided funding. Nevertheless, nonresident students help prepare all
students to effectively live and work in an increasingly global marketplace. Moreover, the total charges they pay significantly
exceed the cost of education, providing extra revenue that improves education for all students and enables campuses to
maintain and increase enrollment for California resident students. Systemwide nonresident undergraduate enrollment
represents a little over 13% of the undergraduate population in 2014-15, whereas more than 30% and 40% of
undergraduates are nonresidents at the University of Virginia and the University of Michigan respectively. For 2015-16, the
University is estimating campuses will enroll an additional 2,000 nonresident students
[1]: http://www.dailycal.org/2015/07/02/uc-admissions-data-for-20...
[2]: http://www.dailycal.org/2016/01/27/state-assembly-members-in...
[3]: http://www.ucop.edu/operating-budget/_files/rbudget/2015-16b...
see also this op-ed:
http://www.dailycal.org/2016/04/01/blame-university-lack-sta...