<graph baseFontSize="10" showvalues="0" shownames="0" xAxisName='Years (Mouse over data points to see detailed information)' yAxisName='Thousands of tons' formatNumberScale='0' showNames='1' zeroPlaneAlpha="0" showAlternateHGridColor='1' AlternateHGridColor='ff5904' divLineColor='ff5904' divLineAlpha='20' alternateHGridAlpha='5'>
	<set name="1974" value="38.05317765" />
	<set name="1975" value="39.27847545" />
	<set name="1976" value="43.56393151" />
	<set name="1977" value="42.20005639" />
	<set name="1978" value="32.33681818" />
	<set name="1979" value="31.20223091" />
	<set name="1980" value="34.72873608" />
	<set name="1981" value="30.53477279" />
	<set name="1982" value="26.10530816" />
	<set name="1983" value="22.59045957" />
	<set name="1984" value="14.32117767" />
	<set name="1985" value="21.78040244" />
	<set name="1986" value="23.37845694" />
	<set name="1987" value="23.08805151" />
	<set name="1988" value="25.1706787" />
	<set name="1989" value="18.70164909" />
	<set name="1990" value="25.7925" />
	<set name="1991" value="22.48061355" />
	<set name="1992" value="25.3814819" />
	<set name="1993" value="39.45373575" />
	<set name="1994" value="35.9043" />
	<set name="1995" value="38.65942112" />
	<set name="1996" value="38.24696903" />
	<set name="1997" value="34.0890469" />
	<set name="1998" value="27.762" />
	<set name="1999" value="23.6461868" />
	<set name="2000" value="19.674" />
	<set name="2001" value="18.626" />
	<set name="2002" value="20.05569318" />
	<set name="2003" value="19.9226" />
	<set name="2004" value="18.5989" />
	<set name="2005" value="19.3786" />
	<set name="2006" value="18.6448" />
	<set name="2007" value="19.0439" />
	<set name="2008" value="20.0067" />
	<set name="2009" value="13.607296" />
	<set name="2010" value="15.79" />
	<set name="2011" value="15.68" />
</graph>