<graph baseFontSize="10" showvalues="0" shownames="0" xAxisName='Years (Mouse over data points to see detailed information)' yAxisName='Thousands of tons' formatNumberScale='0' zeroPlaneAlpha="0" showAlternateHGridColor='1' AlternateHGridColor='ff5904' divLineColor='ff5904' divLineAlpha='20' alternateHGridAlpha='5'>
	<set name="1974" value="395.0415027" />
	<set name="1975" value="370.9602731" />
	<set name="1976" value="434.3522474" />
	<set name="1977" value="410.2990013" />
	<set name="1978" value="394.1591414" />
	<set name="1979" value="375.9748527" />
	<set name="1980" value="393.3306443" />
	<set name="1981" value="377.3197249" />
	<set name="1982" value="304.6642739" />
	<set name="1983" value="310.1947495" />
	<set name="1984" value="302.70786" />
	<set name="1985" value="356.0722" />
	<set name="1986" value="384.22578" />
	<set name="1987" value="369.67624" />
	<set name="1988" value="391.7118815" />
	<set name="1989" value="365.2922648" />
	<set name="1990" value="404.3046" />
	<set name="1991" value="405.0795685" />
	<set name="1992" value="464.2150666" />
	<set name="1993" value="508.0125818" />
	<set name="1994" value="469.0788" />
	<set name="1995" value="529.8364518" />
	<set name="1996" value="494.0921194" />
	<set name="1997" value="504.7719778" />
	<set name="1998" value="414.454" />
	<set name="1999" value="352.518158" />
	<set name="2000" value="285.783" />
	<set name="2001" value="268.7958" />
	<set name="2002" value="261.9048323" />
	<set name="2003" value="235.806" />
	<set name="2004" value="199.7726" />
	<set name="2005" value="191.0311" />
	<set name="2006" value="198.2649" />
	<set name="2007" value="195.8603" />
	<set name="2008" value="167.9802" />
	<set name="2009" value="57.742936" />
	<set name="2010" value="70.98" />
	<set name="2011" value="62.63" />
</graph>