Thermo Fisher Scientific, State Street Corporation, Biogen, Eversource Energy, and Boston Scientific. CNBC's list of "Top States for Business for 2014" has recognized Massachusetts as the 25th-best state in the nation for business, and for the second year in a row the state was ranked by Bloomberg as the most innovative state in America. According to a 2013 study by Phoenix Marketing International, Massachusetts had the sixth-largest number of millionaires per capita in the United States, with a ratio of 6.73 percent. Billionaires living in the state include past and present leaders (and related family) of local companies such as Fidelity Investments, New Balance, Kraft Group, Boston Scientific, and the former Continental Cablevision. Massachusetts has three foreign-trade zones, the Massachusetts Port Authority of Boston, the Port of New Bedford, and the City of Holyoke. Boston-Logan International Airport is the busiest airport in New England, serving 33.4million total passengers in 2015, and witnessing rapid growth in international air traffic since 2010. Sectors vital to the Massachusetts economy include higher education, biotechnology, information technology, finance, health care, tourism, manufacturing, and defense. The Route 128 corridor and Greater Boston continue to be a major center for venture capital investment, and high technology remains an important sector. In recent years tourism has played an ever-important role in the state's economy, with Boston and Cape Cod being the leading destinations. Other popular tourist destinations include Salem, Plymouth, and the Berkshires. Massachusetts is the sixth-most popular tourist destination for foreign travelers. In 2010, the Great Places in Massachusetts Commission published '1,000 Great Places in Massachusetts' that identified 1,000 sites across the commonwealth to highlight the diverse historic, cultural, and natural attractions. While manufacturing comprised less than 10% of Massachusetts's gross state product in 2016, the Commonwealth ranked 16th in the nation in total manufacturing output in the United States. This includes a diverse array of manufactured goods such as medical devices, paper goods, specialty chemicals and plastics, telecommunications and electronics equipment, and machined components. The more than 33,000 nonprofits in Massachusetts employ one-sixth of the state's workforce. In 2007, Governor Deval Patrick signed into law a state holiday, Nonprofit Awareness Day. In February 2017, U.S. News & World Report ranked Massachusetts the best state in the United States based upon 60 metrics including healthcare, education, crime, infrastructure, opportunity, economy, and government. The Bay State ranked number one in education, number two in healthcare, and number five