The chart below shows male and female fitness membership in Thailand between 1985 and 2015.

The provided bar chart meticulously delineates the intricate nuances in male and female participation

within

Change preposition

in

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fitness programs in Thailand from 1985 to 2015. Over the span of three decades, discernible undulations characterize both genders, with male involvement evincing a notably volatile trajectory. Commencing at 2100 in 1985, male enrollment surged to 3900 in 1990 before a precipitous decline to 1900 by 2000. The apogee occurred in 2010, with male engagement peaking at 5000, succeeded by an abrupt 80% contraction in 2015, marking the nadir of the observed period. Remarkably, male predominance persisted in 1985, 1990, 1995, and 2010.

Conversely

, female fitness engagement,

initiating

Wrong verb form

initiated

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at 1200 in 1985, constituted precisely half of male participation. Despite a zenith of nearly 2000 in 1990,

this

figure slightly regressed to 1800 in the subsequent 5 years. A formidable surge ensued in 2000, propelling female participation to 3000, surpassing male figures at 1800.

Nevertheless

, the ensuing 15 years witnessed oscillations between 2000 and 3000, culminating in a downturn to 2000 in 2015.