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CUSIP: 629491101 Class: COM

CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM's Holding History (CIK: 0001081019)

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

Q3 2013
Shares 436,998 Value ($000) $18,345 Avg Close — Range —
Q2 2013
Shares 423,446 Value ($000) $17,531 Avg Close — Range —
Q1 2013
Shares 441,531 Value ($000) $17,061 Avg Close — Range —