Seems like it was about 1995: http://www.ups.com/content/us/en/about/history/1999.html http://www.ups.com/content/us/en/about/history/1999.html But it peaked i

Seems like it was about 1995: http://www.ups.com/content/us/en/about/history/1999.html http://www.ups.com/content/us/en/about/history/1999.html But it peaked in 2000: http://www.ups.com/content/us/en/about/history/2007.html?WT.svl=SubNav http://www.ups.com/content/us/en/about/history/2007.html?WT....