Over the last 20 years the population has decreased by about 1,000 people, down from 8,119 in 1991.
The city has decreased in population by 50,000 over the last 25 years.
The population has decreased by almost 3,500 people since 1991.
The number had decreased to one or two a year by the 1990s.
The population of the town decreased by 16.5% between 2002 to 2006.
The population has decreased by at least 50% over the last 60 years.
Since 2000, the population has decreased by almost 3 percent.
Their number has decreased by 500 000 in the last 15 years.
Its population has decreased by 13 percent from 1999 to 2000.
The population decreased from 6,399 in 1960 to 5,817 by 1980.
