<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="202.1918362" />
	<set name="1975" value="181.0482782" />
	<set name="1976" value="188.8323351" />
	<set name="1977" value="229.0743921" />
	<set name="1978" value="164.4366581" />
	<set name="1979" value="117.2483197" />
	<set name="1980" value="124.846425" />
	<set name="1981" value="130.734435" />
	<set name="1982" value="102.504375" />
	<set name="1983" value="113.36787" />
	<set name="1984" value="124.344375" />
	<set name="1985" value="137.545615" />
	<set name="1986" value="139.55475" />
	<set name="1987" value="151.40729" />
	<set name="1988" value="136.807759" />
	<set name="1989" value="132.3982896" />
	<set name="1990" value="76.36997" />
	<set name="1991" value="70.81703114" />
	<set name="1992" value="68.59926587" />
	<set name="1993" value="84.66653143" />
	<set name="1994" value="72.653755" />
	<set name="1995" value="76.9074" />
	<set name="1996" value="90.1569" />
	<set name="1997" value="78.023" />
	<set name="1998" value="74.261" />
	<set name="1999" value="69.573" />
	<set name="2000" value="70.191" />
	<set name="2001" value="63.002" />
	<set name="2002" value="49.961" />
	<set name="2003" value="57.482" />
	<set name="2004" value="33.44" />
	<set name="2005" value="38.939" />
	<set name="2006" value="39.943" />
	<set name="2007" value="33.3006" />
	<set name="2008" value="32.574" />
	<set name="2009" value="16.520012" />
	<set name="2010" value="23.18" />
	<set name="2011" value="18.48" />
</graph>