And once again we see proof in action of the saying, "There are lies, big lies, and statistics." Note that the graph presented includes ALL federal spending, and shows earmarks as a percentage of everything.
What we are discussing is earmarks. Earmarks are a part of DISCRETIONARY spending. ie: the part of spending Congress actually has direct control over without reneging on non-discretionary federal obligations like Social Security, Medicare/Medicaid, federal employee pensions, etc.