Intensity fluctuated considerably, however, as shear levels varied. Caribou numbers have fluctuated historically, but many herds are in decline across their range. His weight fluctuated drastically over the next few years and once dropped down to . This has fluctuated significantly over the decades. The quail population has fluctuated significantly throughout California. Still commodity prices have fluctuated outside predictions. After about 200 the temperatures fluctuated, trending toward cool. During this time, the tornado fluctuated between an F0/1 and intensified. The size of glaciers on Mount Rainier has fluctuated significantly in the past. Between 2002 and 2006, inflation fluctuated around 14%. Numbers fluctuated according to circumstances and are largely unknown. Since 1991, it has fluctuated around 6,000. Since 2000, Natural gas prices have fluctuated. Richard's reputation over the years has "fluctuated wildly", according to historian John Gillingham. The definition has, however, fluctuated greatly in size over history.