about ten weeks, with seasonal lows dipping to in December and January. May is the hottest month, when daily temperatures range from . January, the coldest month, has temperatures varying from . Extreme temperatures have ranged from . Rains brought by the Bay of Bengal branch of the south west summer monsoon lash Bhubaneswar between June and September, supplying it with most of its annual rainfall of . The highest monthly rainfall total, , occurs in August. Economy Bhubaneswar is an administrative, information technology, education and tourism city. Bhubaneswar was ranked as the best place to do business in India by the World Bank in 2014. Bhubaneswar has emerged as one of the fast-growing, important trading and commercial hub in the state and eastern India. Tourism is a major industry, attracting about 1.5 million tourists in 2011. Bhubaneswar was designed to be a largely residential city with outlying industrial areas. The economy had few major players until the 1990s and was dominated by retail and small-scale manufacturing. With the economic liberalisation policy adopted by the Government of India in the 1990s, Bhubaneswar received investment in telecommunications, information technology (IT) and higher education. In 2011, according to a study by Associated Chambers of Commerce and Industry of India, Bhubaneswar had the highest rate of employment growth among 17 Tier-2 cities in India. It has been listed among the top ten emerging cities in India by Cushman and Wakefield, taking into consideration factors like demographics, physical, social and real estate infrastructure, current level and scope of economic activities and government support. In 2012, Bhubaneswar was ranked third among Indian cities, in starting and operating a business by the World Bank. Bhubaneswar has been traditionally home to handicrafts industry, including silver filigree work, appliqué work, stone and wood carvings and patta painting, which significantly contributes to the city's economy. The late 2000s saw a surge of investments in the real estate, infrastructure, retail and hospitality sectors; several shopping malls and organised retails opened outlets in Bhubaneswar. In the informal sector, 22,000 vendors operate in regulated or unregulated vending zones. As of 2001, around 2.15% of the city's workforce was employed in the primary sector (agriculture, forestry, mining, etc.); 2.18% worked in the secondary sector (industrial and manufacturing); and 95.67% worked in the tertiary sector (service industries). The Department of Industries established four industrial areas in and around Bhubaneswar, in the Rasulgarh, Mancheswar, Chandaka,