ECSENOMICS Rate of Changes of Income Velocity of M T256 Figure 33-5 19601965 19701975 1980 1995 Ye McGraw-Hilllrwin Source: Velocity de fine d as the ratio of gDP to Mi; money supply from the Fede ral reserve boardMcGraw-Hill/Irwin Copyright © 2001 The McGraw-Hill Companies, Inc. All rights reserved. Rate of Changes of Income Velocity of M1 T-256 Figure 33-5 Source: Velocity defined as the ratio of GDP to M1 ; money supply from the Federal Reserve Board and GDP from the Commerce Department