sentences:  The Danes were pioneers in developing commercial wind power during the 1970s and today almost half of the wind turbines around the world are produced by Danish manufacturers such as Vestas and Siemens Wind Power.The Danish wind turbine industry is the world's largest and 90% of the wind turbines manufactured in Denmark are sold to international markets.In 2003, the Danish manufacturers had a total world market share of approximately 38%, generating a combined turnover of almost 3 billion Euro and maintaining over 20,000 people employed in the industry, from wind turbine factories to maintenance and research.