The All Blacks are exhibiting a ranking dominance rarely matched in history, especially in team sports.
In modern times, they are closest to emulating golfer Tiger Woods who was world No1 for a total of 13 years.
The rugby ranking system was brought in by the IRB just before the 2003 World Cup.
It didn't start as it meant to go on because England were the first No 1-ranked team and Australia also started above New Zealand.
Since then, it has been an All Black landslide apart from three brief spells when they were at No 2.
South Africa is the only other country to hold the No1 spot which they last held in 2009, when the current All Black reign began.
Over that time the All Blacks have played 73 tests, losing twice each to Australia and South Africa, once to England, and two draws against their transtasman rivals.
All Blacks fullback Ben Smith made his debut against Italy two days after New Zealand re-gained the No1 spot, meaning the side have held the top ranking during all of his 38 test appearances.