1980-1989: Entering 20th century. B&W to color.
1990-1999: Expansion. The 90's (more specifically 1990-1993) was the climax of WT.
2000-2009: Internet is pure evil.
2010-2014: Internet is no more evil, go to JW.ORG
2020-2029: Artificial Intelligence is the Beast of Revelation.
2030-2039: Artificial Intelligence is Jesus Christ.
2040-2049: Singularity is the Armageddon.
2050-2059: Entering 21st century...