In the past month, the number of people receiving the vaccine averaged 2,000 a week.

The numbers have since increased but averaged 34 in the most recent quarter.

Indeed, the number of wars, civil and international, has probably averaged several dozen per year for the last 30 years.

During the Terror the number of those voting averaged only 250.

The number of staff over the last decade has averaged between 55 and 91 members.

Between 1977 and 1982 the number of such incidents averaged about 500 a year.

But between 1990 and 1997, the last year for which data was available, the number averaged over 34, dipping below 30 only once, in 1994.

Since then the numbers have averaged 400 to 500 a day, with no apparent pattern.

The number of different visitors they were reported to have had during the last twelve months averaged 5.0.

Its special 900-phone number has averaged 400,000 calls a month.