The telecoms sector increased in value from Dh25.6 billion ($3.3 billion) in 2006 to Dh33.3 billion ($4.2 billion) in 2007. With a workforce of some 41,000 employees, the sector contributes 7% to annual GDP and is one of the countrys leading recipients of foreign direct investment (FDI). Under the development plan, the sector should employ 125,000 people by 2012 and contribute 10% of GDP. With the penetration rates of 69.4% from mobile phones and 8.95% for fixed lines, the Moroccan telecoms industry is set to continue to grow. The call centre industry – partially as a result of offshore initiatives, such as Casanearshore and Rabat Technoplis – will continue to expand. However, the worldwide call centre industry is highly competitive and education is the key to success if Morocco truly intends to become a leading international player in this industry.

Answer this question based on the article: How many billion dollars did the telecom industry sector increase from 2006 to 2007?
0.9