'EIOPA' Risk-Free Interest Rate Term Structures for Solvency II // Downloads and parses the risk-free interest rate ('RFR') term structures published monthly by the European Insurance and Occupational Pensions Authority ('EIOPA') for Solvency II calculations. Provides a tidy data frame interface to the data, accessed via the official 'EIOPA' feed at https://www.eiopa.europa.eu/feed/53/rss_en.