Complex sentence: Inflation increased on an average of 100% a year (culminating to an unprecedented level of 159% in 1987), unemployment rates soared to as much as 25% during the mid- 1980s, income declined and economic growth was erratic.
Split into simpler sentences: Inflation increased on an average of 100% a year (culminating to an unprecedented level of 159% in 1987). Unemployment rates soared to as much as 25% during the mid- 1980s, income declined and economic growth was erratic.