Complex sentence: The starting bid has increased several times as a result of inflation to speed up the game: to $2,000 in 1983; $8,000 in 1993; $10,000 in 2001; $12,000 in 2005; and to $15,000 in 2008.
Split into simpler sentences: The starting bid has increased several times as a result of inflation to speed up the game. To $2,000 in 1983; $8,000 in 1993; $10,000 in 2001; $12,000 in 2005; and to $15,000 in 2008.