<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="25.72261725" />
	<set name="1975" value="31.40281089" />
	<set name="1976" value="36.24140415" />
	<set name="1977" value="35.06023825" />
	<set name="1978" value="34.15505051" />
	<set name="1979" value="31.62348" />
	<set name="1980" value="35.77179691" />
	<set name="1981" value="35.58450334" />
	<set name="1982" value="25.19513143" />
	<set name="1983" value="25.50744521" />
	<set name="1984" value="24.62446387" />
	<set name="1985" value="29.40887388" />
	<set name="1986" value="30.609903" />
	<set name="1987" value="29.52848787" />
	<set name="1988" value="30.58621432" />
	<set name="1989" value="27.14875521" />
	<set name="1990" value="32.9868" />
	<set name="1991" value="31.3581359" />
	<set name="1992" value="31.86060605" />
	<set name="1993" value="35.03286815" />
	<set name="1994" value="33.8289" />
	<set name="1995" value="33.69692804" />
	<set name="1996" value="31.1516152" />
	<set name="1997" value="28.0493758" />
	<set name="1998" value="27.477" />
	<set name="1999" value="26.28862317" />
	<set name="2000" value="25.494" />
	<set name="2001" value="26.2512" />
	<set name="2002" value="26.08981352" />
	<set name="2003" value="26.5441" />
	<set name="2004" value="14.9062" />
	<set name="2005" value="14.3182" />
	<set name="2006" value="13.953" />
	<set name="2007" value="12.5422" />
	<set name="2008" value="7.9277" />
	<set name="2009" value="0.539584" />
	<set name="2010" value="1.60" />
	<set name="2011" value="1.53" />
</graph>