'Challenging' for US economy to meet growth target: Yellen

She said such a high growth rate would require accelerating productivity growth to 2 percent from the current 0.5 percent, a big jump since increases
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Gordon MacIntyre-Kemp: Increasing productivity is the best way to grow Scotland's economy

PRODUCTIVITY is the measure of how efficiently businesses produce goods and services. It's a key measure of economic success and international
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