See Annex Table 1.A1.2 in OECD (2011c) for details.] Most of the rise in unemployment during the recession beginning in 1973 occurred in the first nine quarters, generating a similar profile to the curve for the most recent recession up until that point. However, unemployment remained at approximately that same level for an extended period of time in the 1970s recession, finally reaching its highest point after 15 quarters. The pattern was quite different in the recession staring in late 2007 with the unemployment rate switching much more rapidly from its rapid rise during the nine quarters up to 2009Q4 to a slow decline since.