joined the main table. Afghanistan, Canada and Scotland remain on the secondary table. In May 2009, the ICC added a rankings table for all associate members. This contained both global and regional placings. In June 2018, the four associates with ODI status were moved to the main ranking list. Associate rankings according to ICC: Historical rankings The ICC provides ratings for the end of each month back to October 2002. This table lists the teams that have successively held the highest rating since that date, by whole month periods. In 2011, the ICC applied its rating system to results since 1981, providing ratings for the end of each month back to 1981, further indicating Australia's historical dominance in ODI Cricket with the highest number of months ranked first (198 months). The table only begins from 1981 as, prior to this date, there is not enough data available due to the infrequency of matches and the small number of competing teams in the earlier periods. The teams that have successively held the highest rating since January 1981 till September 2002, by whole month periods, are: The summary of teams that have held the highest rating since 1981 till present by whole month periods, are: ICC ODI Championship (2002–2013) The rankings system was formerly called the ICC ODI Championship and, until 2013, the team at the top of the table at the start of each April was awarded the ICC ODI Championship Shield. Like a 2 euro coin, the shield features an inner circle of gold-coloured metal and is surrounded by a ring of silver-coloured metal. It was first presented in December 2002, when Australian captain Ricky Ponting received the award. It was last presented in July 2013, when Indian captain MS Dhoni received the award. Points calculations Each team scores points based on the results of their matches over the last 3–4 years − all matches played in the 12–24 months since the May before last, plus all the matches played in the 24 months before that, for which the matches played and points earned both count half. Each May, the matches and points earned between 3 and 4 years ago are removed, and the matches and points earned between 1 and 2 years ago switch from 100% weighting to 50% weighting. For example, at May 2014, the matches played between May 2010 and April 2011 were removed, and the matches