<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="25.8042949" />
	<set name="1975" value="23.82849188" />
	<set name="1976" value="31.53028464" />
	<set name="1977" value="29.19580082" />
	<set name="1978" value="26.81828283" />
	<set name="1979" value="24.49616727" />
	<set name="1980" value="26.86442474" />
	<set name="1981" value="23.19279797" />
	<set name="1982" value="15.42792612" />
	<set name="1983" value="19.1167766" />
	<set name="1984" value="16.51395714" />
	<set name="1985" value="22.9731899" />
	<set name="1986" value="23.91004122" />
	<set name="1987" value="21.52465419" />
	<set name="1988" value="22.36350207" />
	<set name="1989" value="16.86468541" />
	<set name="1990" value="23.7843" />
	<set name="1991" value="20.3920755" />
	<set name="1992" value="23.2979077" />
	<set name="1993" value="34.0808394" />
	<set name="1994" value="31.0326" />
	<set name="1995" value="19.12794308" />
	<set name="1996" value="20.74492056" />
	<set name="1997" value="18.63836865" />
	<set name="1998" value="18.004" />
	<set name="1999" value="20.36534243" />
	<set name="2000" value="22.623" />
	<set name="2001" value="20.4126" />
	<set name="2002" value="23.872499" />
	<set name="2003" value="22.6445" />
	<set name="2004" value="20.0317" />
	<set name="2005" value="17.7455" />
	<set name="2006" value="18.146" />
	<set name="2007" value="18.2033" />
	<set name="2008" value="15.4297" />
	<set name="2009" value="8.42088" />
	<set name="2010" value="10.57" />
	<set name="2011" value="7.79" />
</graph>