The Bronx is the northernmost of New York City's five boroughs and home to nearly one-fifth of the City's population. Since 2010, it has been the fastest-growing county in New York State, driven by immigration. Immigrants are a growing presence in the Bronx, and now make up 37 percent of the total population (twice the share in 1980). Immigrants are also a large part of the borough's economic success, making up nearly half of the work force and 60 percent of self-employed entrepreneurs. After falling sharply during the 1960s and 1970s, the number of businesses in the Bronx has been growing steadily. In 2017, there were more businesses than at any time since at least 1975. Public and private investments have helped create new businesses, which in turn have generated thousands of new jobs. The Bronx added 40,900 private sector jobs during a 10-year period ending in 2017, and was the only borough in New York City that did not lose jobs during the Great Recession. Job growth was fastest in the Morris Heights area, where employment grew by 41 percent. Growth was also strong in the Hunts Point area, which was responsible for nearly one-quarter of the private sector job gains in the borough. The Bronx has set employment records for 10 consecutive years, and the unemployment rate has fallen to a record low. Despite these positive trends, the Bronx still faces challenges. Many residents live in poverty, youth unemployment remains high and there is a shortage of affordable housing. Nonetheless, the Bronx has made great strides over the past four decades.