UW-Madison and affiliated organizations contribute $12.4 billion annually to Wisconsin?s economy, according to a new study, the first of its kind in eight years. The report, conducted by Madison-based NorthStar Economics Inc., found that the university, UW Hospital and Clinics and related groups support 128,146 jobs. The results come as UW-Madison officials seek to affirm the university?s importance to the state in the face of a $125 million budget cut under Gov. Scott Walker?s proposed two-year state budget.