Annual UK GDP growth: Nominal vs Real How nominal GDP growth has fluctuated between policy regime periods 1965-2016 Source: ONS -7 -2 3 8 13 18 23 28 1965 1968 1971 1974 1977 1980 1983 1986 1989 1992 1995 1998 2001 2004 2007 2010 2013 2016 Real GDP growth Nominal GDP growth Average nominal GDP growth over relevant period B F G A H C D E Key Policy regime Period Mean growth Std. deviaon of growth A Breon Woods 1946-72 9.5 2.8 B ‘Snake’ currency band 6 weeks - - C Sterling free float 1972-76 17.8 6.0 D Monetary targets 1976-87 13.0 4.5 E Forms of exchange rate targeng 1987-90 11.2 1.2 F ERM 1990-92 5.8 2.5 G Inflaon targeng: 1-4% band of RPIX 1992-2004 5.1 1.0 H Inflaon target adjustment: 2% CPI rate 2004- 3.3 2.5 The standard deviaon is a measure of the dispersion of a set of data from its mean - implying volality. A higher standard deviaon infers data points are further from the mean, thus a greater deviaon within the data set. In our case, we esmate this dispersion within each separate regime period shown in the table, right.