The number of exporters was not growing either. Just 200 businesses accounted for nearly 80 per cent of merchandise export trade.
Mr MacGibbon put that sluggishness down to "navel gazing - not looking at what's happening in the rest of the world".
He compared New Zealand with Denmark, two countries with similar population size. In the 1970s both had major strengths in food production. Both had grown their food exports since then but Denmark had romped ahead of New Zealand with other export products.
In fact between 2004 and 2010, New Zealand's dairy exports were the only category to grow much - and exported services actually declined.
The country's agricultural commodities were always going to form the basis of exports, Mr MacGibbon said - but they needed value added.
"We can feed 20 million people, that's as far as we can go. It's better to feed rich people with high-value food."
Meanwhile, Asia was reverting to where it was up until 1800 - with about half the world's wealth. China and India were growing especially fast.
"The Indian middle classes will soon be larger than the United States and Germany combined, and better educated."
New Zealand's exports were growing fastest with its top two trading partners, Australia and China. And since its free trade agreement with China in 2008, New Zealand's exports there had grown 148 per cent.
The biggest growth in exports to China was in food and fibre, with exports totalling $5.7 billion and imports $6.8 billion.
For those in the Whanganui region, its regional business partner programme is run by Vision Manawatu, and its incubators programme is run from Palmerston North's Bio Commerce Centre (BCC). China business programmes are run in New Plymouth and Palmerston North.
Spending a few hours on the Trade and Enterprise website would be a good start toward finding out more about how it could help, Mr MacGibbon said.
Export NZ Whanganui Region has its first export training this month, August 21-23. For more information see www.whanganuichamber.org.nz
NEW ZEALAND TRADE AND INDUSTRY
Aims to help exporters
2000 customers
Crown entity with private board
36 international offices
$150 million budget
550 staff, most of them offshore