Conversation so far:
in what areas was Joko Widodo successful?
He introduced programs to improve quality of life in the city, including universal healthcare, dredging the city's main river to reduce flooding, and inaugurating construction of the city's subway system.
what grew 4.6% under Joko Widodo?
In the first quarter of 2015, year-on-year GDP grew 4.92%, and in the second quarter, it grew 4.6%, the lowest figure since 2009.

Question: What happened as a result of GDP growing?
Self-contained rewrite: What happened as a result of GDP growing under Joko Widodo?