By Jason Simpkins Associate Editor Merrill Lynch & Co. Inc. (MER) has raised its annual infrastructure-spending estimate for emerging markets by 80%, as developing countries try to keep pace with fast-growing economies and large cash reserves, BusinessWeek reported. Investment in infrastructure, which the firm sees as the long-term solution to inflation, will rise from $1.25 trillion to $2.25 trillion annually over the next three years. And China, the Middle East, and Russia will account for 70% of infrastructure spending. The report from Merrill Lynch pointed out that Xstrata PLC (OTC: XSRAY) recently predicted emerging markets would spend $22 trillion on infrastructure in the next 10 years. “That estimate is among the highest we’ve seen,” the report noted, “with an implied run rate of $6.6 trillion over the next three years.” Estimated Infrastructure Spending For the Next Three Year...