Much of the slump was down to "particularly poor" sales in the last two weeks of March, according to UK music industry body the British Phonographic Industry (BPI).
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The study was carried out by industry training body Opito and the Engineering Construction Industry Training Board.
Speaking after receiving industry body Oil and Gas UK's lifetime achievement award, he urged young people to get involved in the industry.
Figures released by industry body Airports Council International indicated a slowing of traffic growth across Europe.
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However the international music industry body the IFPI was highly critical of the research.
The industry body has drawn criticism in the past for its overly close relationship with Microsoft.
Industry body Homes for Scotland cautiously welcomed the increase in private sector house starts.
According to the industry body GSMA, some 30 countries already have operational 4G networks.
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There is unmet demand for long-dated paper, says the Bond Market Association, an industry body.
Jacob Tompkins, of water industry body Water UK, said all four areas earmarked for development faced water shortages.
But industry body Homes for Scotland said the proposed changes to building standards could "deepen Scotland's housing crisis".
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However, industry body Oil and Gas UK, said it would have a damaging effect on investment and jobs.
The industry body said a downturn in the economy and high interest rates were key factors behind the decline.
The industry body said that meant that production for the year so far was 4.4% higher than in 2010.
And consumers need to be educated on such initiatives by the industry body to instill a sense of trust.
That is short of the forecast of 11% to 14% growth for the sector from outsourcing industry body Nasscom.
Industry body Scottish Financial Enterprise described the move as a "sound endorsement" of Edinburgh as a leading financial services centre.
Scottish home building industry body Homes for Scotland said production had declined despite indications for the need to increase supply.
On January 18th the Investment Trust Association of Japan, the industry body, came up with a rushed set of investment rules.
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Industry body Oil and Gas UK also indicated it was too early to say when full offshore helicopter operations could be reintroduced.
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Ian Smith, acting chairman of industry body Dairy Farmers of Scotland, said domestic milk production was at its lowest level since 1972.
"We have one of the harshest systems, " said Tina Riches, technical director at the Chartered Institute of Taxation, a U.K. industry body.
Industry body Oil and Gas UK said the keynote speaker would be Lord Cullen, who chaired the public inquiry into the disaster.
So said Mohammed Shahabuddin, manager of business development for the National Association of Software and Service Companies (NASSCOM), an Indian software industry body.
Industry body Oil and Gas UK said the report highlighted the need for more work to be done, despite recent investment in maintenance.
According to Manuel Gomez, president of Mexico's road-freight industry body, Canacar, there are 375, 000 trucks in Mexico and some 7m in the United States.
Valiant efforts to interpret these rules are being made by the International Private Equity Valuations Board, an industry body that some buy-out firms support.
The record industry body argued that the Digital Millennium Copyright Act allowed them to subpoena information about suspected pirates without first seeking a judge's blessing.
Earlier this week, industry body Oil and Gas UK released its own survey, which suggested confidence among companies operating in the North Sea was increasing.
The IFPI, an industry body, says that the number of legitimate download sites has surged, and there were over 200m legal music downloads in 2004.
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