The phrase "last millennium" refers to the period of time that occurred from the year 1000 to the year 1999. It represents the past thousand years before the current century. Full definition
That was the case for the 8.2 ka event (stomata data), the Taylor Dome for last millenium (temperature data not present anymore) and even during recent times: CO2 increase variations follow sea surface temperatures (El Nià ± o) superimposed over the industrial trend... (realclimate.org)
In the meantime though, if we wish to seriously compete at the very top, we need to be firmly in the first flight of this «madness» and the encoraging signs are that in Sven and Raul WE, HAVE AT LAST, TWO MEN WHO LIVE IN THE FOOTBALL WORLD AS IT IS, rather than Wenger, who lives in his ivory tower days back in the last millenium. (justarsenal.com)