How the Premier League has changed
Twenty years ago, things were very different.
This time in 1989, The Simpsons had yet to broadcast a single full episode (it'll reach 450 by this Christmas). The Soviet Union was still in one piece, just about. As the football season began, Jive Bunny was number one in the charts.
We've come on leaps and bounds as a civilization since then. Now Tinchy Stryder is number one.
In 1989, you had an outside chance of travelling to a football match alongside some of your team's players on the bus.
Nowadays, unless you live near Robinho, you'd be staggered to discover a Premier League centre forward catching the matchday special from the middle of town.
Above: West Ham defensive walls, then and now. December 2008 on the left, February 1990 on the right.
Back in '89 (and it's not so long ago), the players in English football's top flight were a very different breed, with barely any foreign-born stars in the league - as Tim Vickery discussed on Monday with reference to Ecuador.
Our interactive map of player birthplaces illustrates how each of the current Premier League squads has changed in the last 20 years.
Beneath the map we've attempted to provide a brief breakdown of each team's squads from 1989 and 2009, highlighting the most interesting points of the map, and listing the players from both seasons.
It hasn't always been easy deciding who to include on the map.
Firstly, the map shows only the current Premier League teams, even for 1989/90, because it would have become complicated and messy jumping between the current top-flight teams, and a different set of top-flight teams 20 years ago.
Secondly, we've limited the map to players with a reasonable chance of first-team football - either those this year who can expect to feature in the coming season, or those in 1989 who went on to make league appearances that season.
However, with hundreds of players it's easy to overlook one or two, or include some who maybe don't fit the description above.
Plus it's sometimes tricky to gauge new signings - will Jay O'Shea, signed by Birmingham from Galway, take much part this year? Hard to tell but I decided, on balance, probably not.
It's quite subjective and I may well have got some decisions wrong, but wanted to avoid having thousands of points on the map by virtue of including every player on a team's books.
With these decisions in mind, I want to turn the data over to you. Download the full spreadsheet and take a look at the information powering the map.
If you spot anything that you think is an error or an omission, let me know. The data has been gathered from a variety of sources - mostly from the clubs themselves for 2009/10, but tracing the birthplaces of a few 1989/90 players has been trickier.
Latitude and longitude details are included for each player. These are obviously not accurate down to their precise place of birth (I'll be impressed, and slightly worried, if anyone has that information for the whole Premier League), but those coordinates should locate the town in question.
If you can come up with anything clever using the data that we haven't spotted or thought to try, I'd be keen to hear from you. Sites like Many Eyes and Maker can be good for playing about with data, but there are many more out there.
I'd also like to know if any of the names we picked out brought back any memories.
From what I can gather, Thomas Hauser did not exactly win the hearts of the Roker Park faithful during his time at Sunderland. I'd be interested to know how some of the other early foreign-born players mentioned got on.
We'll update the map again when the transfer window shuts at the end of August. In the meantime, I'm off to admire George Berry's hairdo.