reduction of customs duties provided for in Article 10 is applied.Article 18Notwithstanding Article 17 Turkey shall, for the products listed in Annex 3, align its customs tariff over a period of twenty-two years in accordance with the following rules:1. In the case of products for which the duties actually applied by Turkey on the date of signature of this Protocol do not differ from the Common Customs Tariff duties by more than 15% either way, the latter duties shall be applied from the date of the fourth reduction of duties provided for in Article 11.2. In any other case Turkey shall, from the date of the fourth reduction of duties provided for in Article 11, apply duties reducing by 20% the difference between the duty actually applied at the date of signature of this Protocol and the duty in the Common Customs Tariff.3. When the seventh and ninth reductions provided for in Article 11 are applied, this difference shall be further reduced by 30% and 20%, respectively.4. The Common Customs Tariff shall be applied in its entirety at the end of the twenty-second year.Article 191. In the case of particular products making up not more than 10% of the total value of its imports in 1967, Turkey may, after consultation in the Council of Association, defer until the end of the twenty-second year after the entry into force of this Protrocol the reductions of duties in respect of third countries which it should otherwise make under Articles 17 and 18.2. In the case of particular products making up not more than 5% of the total value of its imports in 1967, Turkey may, after consultation in the Council of Association, retain after a period of twenty-two years customs duties in respect of third countries which are higher than those in the Common Customs Tariff.3. However, the application of the preceding paragraphs must not prejudice the free movement of goods within the Association and shall not entitle Turkey to invoke the provisions of Article 5.4. Where alignment of the Turkish Customs Tariff with the Common Customs Tariff has been accelerated, Turkey shall maintain in favour of the Community a preference equivalent to that resulting from the arrangements provided for in this Chapter.As regards the products listed in Annex 3, no such acceleration may take place before the end of the transitional stage, unless prior authorization has been given by the Council of Association.5. As regards customs duties which have been authorized pursuant to the first subparagraph of Article 16 (4) or which Turkey may provisionally maintain in accordance with the second subparagraph of Article 16 (4), Articles 17 and 18 need not be applied. On expiry of the authorization, Turkey shall apply the duties provided for in Articles 17 and 18.Article 201. To facilitate the importation of particular goods from countries with which Turkey has concluded bilateral trade agreements, Turkey may, with the prior authorization of the Council of Association, grant tariff quotas at reduced or zero rates of duty, if the functioning of those agreements is appreciably affected by the application of this Protocol or by measures taken in pursuance thereof.2. Such authorization shall be deemed to have been given when the tariff quotas mentioned in the preceding paragraph comply with the following conditions:(a) the total annual value of such quotas does not exceed 10% of the average value of Turkish imports from third countries during the past three years for which statistics are available, excluding from such imports those which were made with the help of the means referred to in Annex 4. Imports from third countries admitted free of duty within the framework of Annex 4 shall be deducted from this 10%;(b) in the case of each product, the value of imports provided for within the framework of the tariff quotas shall not exceed one third of the average value of Turkish imports of that product from third countries in the past three years for which statistics are available.3. Turkey shall notify the Council of Association of measures which it envisages taking in pursuance of paragraph 2.At the end of the transitional stage the Council of Association may decide whether the provisions of paragraph 2 should be repealed or amended.4. In no case may the duty under a tariff quota be lower than that actually applied by Turkey to imports from the Community.CHAPTER IIELIMINATION OF QUANTITATIVE RESTRICTIONS BETWEEN THE CONTRACTING PARTIESArticle 21Quantitative restrictions on imports and all measures having equivalent effect shall, without prejudice to the following provisions, be prohibited between the Contracting Parties.Article 221. The Contracting Parties shall refrain from introducing any new quantitative restrictions on imports or measures having equivalent effect.2. However, as regards Turkey, this obligation shall, at the date of the entry into force of this Protocol, apply only to 35% of Turkish imports on private account from the Community in 1967. This percentage shall be increased to 40%, 45%, 60% and 80%, three, eight, thirteen and eighteen years after the entry into force of this Protocol.3. Six months before each of the dates of the last three increases the Council of Association shall review the consequences for the economic development of Turkey of increasing the degree of