Success of the economy hinges upon seasonal variations in agriculture, tourism, and construction activity as well as remittance inflows. Much of the workforce is employed in banana production and tourism, but persistent high unemployment has prompted many to leave the islands. This lower-middle-income country is vulnerable to natural disasters - tropical storms wiped out substantial portions of crops in 1994, 1995, and 2002. In 2008, the islands had more than 200,000 tourist arrivals, mostly to the Grenadines, a drop of nearly 20% from 2007. Saint Vincent is home to a small offshore banking sector and has moved to adopt international regulatory standards. The government's ability to invest in social programs and respond to external shocks is constrained by its high public debt burden, which was 68% of GDP at the end of 2011. GDP grew on average 6% annually from 2002-07, but contracted between 2008-10 as a result of the global economic downturn; growth remains slow.