The Fidelity Research Institute reported March 12 that Americans are slightly better prepared for retirement, but noted that their expectations for income in retirement remain highly unrealistic. The Institute's third annual Retirement Index showed that the typical American working household is on track to replace 58% of its income in retirement–a slight increase from the 57% level reported in 2006. However, the Institute's executive director, Guy Patton, told reporters in a conference call that while "Americans are still making some progress" in preparing financially for retirement, there remains "plenty of work" to improve their retirement readiness, noting that the "principal driver" behind even the slight increase was the financial markets' performance over the past year.