Contributions to the Chicago Fed Relative Midwest Economy Index: Illinois Contribution was 0.43885 Index Standard Deviation in May of 2021, according to the United States Federal Reserve. Historically, Contributions to the Chicago Fed Relative Midwest Economy Index: Illinois Contribution reached a record high of 0.57669 in March of 2021 and a record low of -2.69865 in August of 2020. Trading Economics provides the current actual value, an historical data chart and related indicators for Contributions to the Chicago Fed Relative Midwest Economy Index: Illinois Contribution - last updated from the United States Federal Reserve on March of 2024.