The Persians remain 45 with 616 points in the world and fourth in Asia. Japan remains the best Asian team with 884 points followed by Australia (851) and South Korea (752).
World and European champions Spain remain unchallenged at the top of the table, followed by the Netherlands, Germany and Uruguay, who are all still competing in an exciting head-to-head battle for second place. As the top team at year-end, Spain is the Team of the Year for the fourth year in a row.
Wales have been named "best mover of the year" in the final 2011 Fifa world rankings after they gained more ranking points than any other side in the past 12 months.
Under his stewardship of Gary Speed, who committed suicide at his home in Cheshire last month, they rose from 116th to finish the year in 48th place.
Best Mover of the Years
2011 Wales
2010 Netherlands
2009 Algeria and Brazil
2008 Spain
2007 Mozambique
2006 Italy
2005 Ghana
2004 China PR
2003 Bahrain
2002 Senegal
2001 Costa Rica
2000 Nigeria
1999 Slovenia
1998 Croatia
1997 Yugoslavia
1996 South Africa
1995 Jamaica
1994 Croatia
1993 Colombia