Commodity200520062007200820092010
Siliceous fossil meals (e.g., kieselguhr, tripolite & diatomite) & sim. sil ...$3,074,889$4,146,194$5,864,879$5,980,753$4,529,611$5,064,433
Total$3,074,889$4,146,194$5,864,879$5,980,753$4,529,611$5,064,433