It's great to see that the university where I did my undergrad studies tops the GSoC list [1, 2, 3], not only in the number of applications but also, more importantly, in the number of accepted proposals. Google Summer of Code is considered to be a major effort promoting open source projects among universities. It's quite competitive to get a proposal accepted.
Getting started is the hardest part of anything. If we look at the last 3 years, I recognize one person, Dr. Sanjiva Weerawarana, who, I am sure, would be happier than anyone else to see these current figures. Dr. Weerawarana has been encouraging and helping university students through LSF and WSO2, as well as being a part-time lecturer to participate in open source projects including GSoC. We should also recognize the effort by the faculty and the heads of the departments (including my undergrad department) of University of Moratuwa to drive students to obtain real world experience through practical open source projects.