11.   But these figures masked a trend that soon undermined the financial viability of individual dance companies.

12.   Some experts say those figures mask real progress, however, since a baby boom among Indians in the last generation has sharply increased the number of young people.

13.   Some scholars warned that the new figures masked a coming explosion in violent crime as the number of teen-agers in the population was about to rise.

14.   The regional debt figures mask some potentially worrisome country-by-country levels.

15.   These figures masked a big upsurge in underemployment and casual work.

16.   But the relatively low average figure masked record scores in specific strongholds.

17.   But the figures mask some large disparities.

18.   The overall EU figures however mask considerable divergences between member states.