<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="317.3147056" />
	<set name="1975" value="292.6413754" />
	<set name="1976" value="344.963138" />
	<set name="1977" value="338.4433302" />
	<set name="1978" value="316.4051179" />
	<set name="1979" value="328.3803655" />
	<set name="1980" value="334.12944" />
	<set name="1981" value="273.9596" />
	<set name="1982" value="211.41585" />
	<set name="1983" value="334.13848" />
	<set name="1984" value="286.452" />
	<set name="1985" value="335.2434" />
	<set name="1986" value="346.60066" />
	<set name="1987" value="315.647415" />
	<set name="1988" value="348.5892365" />
	<set name="1989" value="317.8722268" />
	<set name="1990" value="309.629705" />
	<set name="1991" value="317.6841037" />
	<set name="1992" value="376.5998133" />
	<set name="1993" value="321.2805098" />
	<set name="1994" value="304.28809" />
	<set name="1995" value="26.1298" />
	<set name="1996" value="22.7755" />
	<set name="1997" value="20.968" />
	<set name="1998" value="20.501" />
	<set name="1999" value="15.921" />
	<set name="2000" value="19.856" />
	<set name="2001" value="15.55" />
	<set name="2002" value="16.661" />
	<set name="2003" value="14.792" />
	<set name="2004" value="18.526" />
	<set name="2005" value="17.474" />
	<set name="2006" value="18.352" />
	<set name="2007" value="17.0962" />
	<set name="2008" value="14.701" />
	<set name="2009" value="12.461277" />
	<set name="2010" value="11.42" />
	<set name="2011" value="7.69" />
</graph>