A Millenium is every 1000 years, if we add 10 years to that. A decade passes, therefore if 2000 is the second Millenium. That means if we add another 20 years, 2 decades has passes.
Year 0
+ 1 Millenium
Year 1000
+ 1 Decade
Year 1010
+ 1 Millenium
Year 2010
+ 1 Decade
Year 2020
Therefor is the...