I submit to you that inclustion of Microsoft Outlook in corporate environments in early 2000s correlates with spike in productivity not seen since mid seventies. (calnewport.com)
I followed Arsenal all over the place from the mid seventies until I moved abroad in the 90's for a while, but that was my only trip abroad. (untold-arsenal.com)
Diana began practicing, teaching and researching various methods of the techniques in the mid seventies. (lovingtouch.com)