a national or European level. Each State can only issue one commemorative coin per year and always in the format of 2 euros. Since 2013 two commemorative coins per year are allowed. The joint commemorative issues carried out by all the States of the eurozone (that is to say, excluding the euro-issuing States that do not belong to the EU), are additional to the emissions carried out by each State individually. In the event that the State Headquarters is vacant or provisionally occupied, that State may issue an additional commemorative coin. The legend engraved on the edge of the commemorative euro coins intended for circulation must be the same as that on the normal euro coins intended for circulation. They have limited the maximum volume of emission. The total number of such coins put into circulation per year should not surpass the higher of the following two numbers: 0.1% of the total number of €2 coins put into circulation by all members of the eurozone. This limit can exceptionally be increased to up to 2.0 per cent if the coin commemorates a very important and noteworthy event; in this case, the member state issuing this higher number of coins should refrain from putting any commemorative coins into circulation for the following four years. 5.0% of the total number of €2 coins put into circulation by the member state issuing the €2 commemorative coin. Since 2005, the recommendations for the design of the national sides of all the coins have been modified, which has also affected the designs of the €2 commemorative coins of the following years. See Euro coins for more information. Member states must inform each other of new draft designs, ultimately European Council and the European Commission approves them. In 2015, Belgium planned to submit a design commemorating the 200th anniversary of the Battle of Waterloo, which caused complaints from France. Belgium resigned from issuing such a coin. However, a Belgian collector's coin of 2.50 euros was issued, taking advantage of the fact that these coins are not submitted to approval process of draft designs. Issues 19 members of the Eurozone including four microstates have independently issued €2 commemorative coins with Greece being the first country to issue this type of coin. Croatia has yet to issue a commemorative coin since its Euro adoption. There have been five common €2 commemorative coins issues: 50 years since the Treaty