<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="34.63695529" />
	<set name="1975" value="33.40762297" />
	<set name="1976" value="37.96562341" />
	<set name="1977" value="33.42837278" />
	<set name="1978" value="34.08191919" />
	<set name="1979" value="32.07953455" />
	<set name="1980" value="31.89642887" />
	<set name="1981" value="31.26038586" />
	<set name="1982" value="12.34208939" />
	<set name="1983" value="10.35154043" />
	<set name="1984" value="12.53338034" />
	<set name="1985" value="21.22813197" />
	<set name="1986" value="22.02062985" />
	<set name="1987" value="21.94409545" />
	<set name="1988" value="20.40222334" />
	<set name="1989" value="22.96492483" />
	<set name="1990" value="29.0271" />
	<set name="1991" value="23.6401152" />
	<set name="1992" value="30.6201851" />
	<set name="1993" value="40.4259387" />
	<set name="1994" value="36.0634" />
	<set name="1995" value="36.38628213" />
	<set name="1996" value="33.70932455" />
	<set name="1997" value="28.84386378" />
	<set name="1998" value="27.549" />
	<set name="1999" value="29.05486049" />
	<set name="2000" value="31.651" />
	<set name="2001" value="26.1098" />
	<set name="2002" value="25.17537977" />
	<set name="2003" value="24.6141" />
	<set name="2004" value="19.8427" />
	<set name="2005" value="18.1545" />
	<set name="2006" value="17.1836" />
	<set name="2007" value="17.6211" />
	<set name="2008" value="15.0999" />
	<set name="2009" value="3.526372" />
	<set name="2010" value="3.00" />
	<set name="2011" value="1.82" />
</graph>