Countries can force up economic growth rates (actual the growth rate of economic activity) simply by mobilizing savings and forcing up investment rates, but ultimately their inability to absorb continuously the higher levels of capital mean that they can not push real wealth per capita beyond some fairly hard constraint represented by their institutional inability to absorb investment. (carnegieendowment.org)
The charts below from a San Francisco Fed study published in 2015 show the extent to which the central bank's forecasts were consistently above actual growth rates. (businessinsider.com)
Actual growth rates for CO2 emissions have been (source UN): (climate-skeptic.com)