[填空题]How much is the total estimated cost It costs _________________________________.

As of 2001, the estimated total market value of organic products was estimated to be $20 billion. By 2002 this was $23 billion and by 2007 more than $ 46 billion according to Organic Monitor. In recent years both Europe and North America have experienced strong growth in organic farm land. However, this growth has occurred under different conditions. While the European Union has shifted agricultural subsidies to organic farmers due to environmental benefits, the United States has taken a free market ap proach. As a result, as of 2008, 4.1 percent of the European Union’s farm land was organically managed compared to just 0.6 percent of United States farmland. The growth of organic farmland area in the EU was 21% from 2005 to 2008 reaching a total of 7.8 million hectares. Statistics and Emergnig Trends 2009 lists the countries which had the most hectares in 2007. The country with the most organic land is Australia, with mote than 12 mil lion hectares, lollowed by Argentina, B