EXPRESS SCRIPTS INC

CUSIP: 302182100 Class: COM

BRITISH COLUMBIA INVESTMENT MANAGEMENT Corp's Holding History (CIK: 0001228242)

Note: Option positions (PUT/CALL) are excluded.

Q1 2012
Shares 328,211 Value ($000) $17,782 Avg Close — Range —
Q4 2011
Shares 375,503 Value ($000) $16,781 Avg Close — Range —
Q3 2011
Shares 290,669 Value ($000) $10,775 Avg Close — Range —