country 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011
country
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
number
number
number
number
number
number
number
number
number
number
number
number
text number number number number number number number number number number number number
australia 160 230 290 230 200 200 200 57300 58000 58000 58000 58000
what is the total amount of niobium produced in rwanda in 2000 ?
WP VBD-AUX DT JJ NN IN NN VBN IN NNP IN CD .
28
select c2_number from w where c1 = 'rwanda'