Complex sentence: Whilst in government, unemployment fell from 6.9% in 2013 to 5.2% by 2017 and GDP growth has remained relatively high, reaching 3.6% in 2016.
Split into simpler sentences: Whilst in government, unemployment fell from 6.9% in 2013 to 5.2% by 2017. Whilst GDP growth has remained relatively high, reaching 3.6% in 2016.