<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="27.59108471" />
	<set name="1975" value="23.32730139" />
	<set name="1976" value="27.11260509" />
	<set name="1977" value="32.02133753" />
	<set name="1978" value="22.74909091" />
	<set name="1979" value="24.93621818" />
	<set name="1980" value="29.83196598" />
	<set name="1981" value="30.22864101" />
	<set name="1982" value="23.79775041" />
	<set name="1983" value="26.13089202" />
	<set name="1984" value="28.19160368" />
	<set name="1985" value="31.25635236" />
	<set name="1986" value="31.3064315" />
	<set name="1987" value="34.73793713" />
	<set name="1988" value="30.74720853" />
	<set name="1989" value="30.29113216" />
	<set name="1990" value="24.4854" />
	<set name="1991" value="30.2063166" />
	<set name="1992" value="23.28030335" />
	<set name="1993" value="33.4567863" />
	<set name="1994" value="30.78225" />
	<set name="1995" value="15.90846723" />
	<set name="1996" value="18.16101241" />
	<set name="1997" value="15.71216569" />
	<set name="1998" value="16.218" />
	<set name="1999" value="16.01353194" />
	<set name="2000" value="16.892" />
	<set name="2001" value="14.943" />
	<set name="2002" value="15.31388848" />
	<set name="2003" value="17.8119" />
	<set name="2004" value="14.1108" />
	<set name="2005" value="16.3226" />
	<set name="2006" value="14.7214" />
	<set name="2007" value="13.3052" />
	<set name="2008" value="13.0674" />
	<set name="2009" value="4.418136" />
	<set name="2010" value="10.04" />
	<set name="2011" value="8.49" />
</graph>