context: Warsaw produces 12% of Polands national income, which in 2008 was 305.1% of the Polish average per capita (or 160% of the European Union average). The Nominal GDP per capita in Warsaw amounted to PLN 134,000 in 2015 (c. €31,200 or $74,400 in Purchasing Power Parity). Total nominal GDP of the city in 2010 amounted to 191.766 billion PLN, 111,696 PLN per capita, which was 301.1% of the Polish average. Warsaw leads East-Central Europe in foreign investment and in 2006, GDP growth met expectations with a level of 6.1%. It also has one of the fastest growing economies, with GDP growth at 6.5 percent in 2007 and 6.1 percent in the first quarter of 2008.
question: Which year  did Warsaw had the largest percentage growing economies in GDP growth: 2008 or 2007?
answer: 2008