Table 3 OECD output (per cent) Share of world output  Change in share  1980  2001  1980-2001  United States Japan Germany France United Kingdom Italy Canada Spain Australia  21.27 8.05 5.66 3.91 3.60 4.00 2.14 1.89 1.06  21.31 7.28 4.50 3.21 3.13 3.09 1.98 1.76 1.13  0.2 –9.6 –20.5 –18.1 –13.2 –22.8 –7.7 –7.2 6.4  Netherlands Belgium Sweden Austria Switzerland Greece Portugal Denmark Norway Finland Ireland New Zealand  1.03 0.77 0.63 0.57 0.64 0.48 0.41 0.40 0.31 0.32 0.16 0.21  0.90 0.60 0.49 0.47 0.46 0.39 0.38 0.34 0.29 0.29 0.25 0.17  –12.8 –21.7 –23.2 –18.3 –28.4 –19.3 –8.4 –16.1 –5.9 –10.4 58.1 –17.9  Total  57.5  52.4  –8.9  I have presented enough statistics for the time being.
The purpose of highlighting these 20-year trends was not to imply that they must continue - they may not.