As the new millennium approached, his frequency of play declined and since 2004, he has been more or less inactive.
In one study, the frequency of medication errors declined by 50% after prevention activities were implemented in a 700-bed hospital.
As children get older the frequency and intensity of these outbursts decline.
A recent survey showed that the frequency of sexual intercourse in married couples declined 90 percent after three years of marriage.
From there its frequency declines steeply both to the east and to the west.
The frequency has steadily declined over time, however, from 1.3 fights per game in the late 1980s to 0.5 in 2012.
The frequency and intensity of attacks usually declines with time.
The frequency of the group's outrageous stage antics has declined significantly, as they claim to have matured "a little bit".
On one hand, the frequency of enuresis declines as children grow older.
If there was no interest from the business community, the frequency of the visits would decline.
