"If we extrapolate this trend forward, labour productivity growth would
   reach zero by 2028."
   [1]https://medium.com/insurge-intelligence/govt-economic-advisor-warns-
   british-defence-planners-that-growth-is-ending-abf806f17845

References

   1. https://medium.com/insurge-intelligence/govt-economic-advisor-warns-british-defence-planners-that-growth-is-ending-abf806f17845