This arises because some innovation activities, such as design or patenting, may be funded by one industry, say manufacturing, but their undertaking may be outsourced to another industry, say Business services, which includes industrial design consultancy and legal firms. Although these complex input-output relations make it difficult to infer the skills and occupations involved in innovation in a specific industry, the official surveys do provide a clear insight into the breadth of skills required for innovation at an economy-wide level. The following examples are taken from Australia using statistics from recent official innovation surveys of private businesses, though it is crucial to note similar patterns of diversity apply across OECD countries. For example, over the three-year period 2001-03 in Australia just 34.8% of firms undertook any form of innovation.