Long run default rate of a rating category where a sufficient number of credit ratings is available
Article 5
1. Where a sufficient number of credit ratings is available in accordance with Article 3, the long run default rate referred to in Article 1 shall be calculated according to paragraphs 2 to 4. 2. The long run default rate shall be calculated as the weighted average of at least the most recent 20 short run default rates calculated according to Article 4(1). If the available short run default rates span a longer period and they are relevant, the short run default rates for that longer period shall be used. Where less than 20 short run default rates calculated according to Article 4(1) are available the remaining short run default rates shall be estimated to span the 20 short run default rates. 3. For the purpose of producing the weighted average referred to in paragraph 2, the short run default rates calculated according to Article 4 shall include the most recent recessionary period. This recessionary period shall span a semester or more of the negative growth rates of the Gross Domestic Products in the main geographical areas of reference of the rated items. 4. For the purpose of producing the weighted average referred to in paragraph 2, the following shall apply: (a) the short run default rates calculated according to Article 4(1) shall be weighted based on the number of items specified in point (a) of Article 4(2); (b) the estimated short run default rates shall be weighted based on estimates of the number of items assigned the same rating category present at the beginning of the time horizon. The weights shall ensure an adequate representation of recessionary and non-recessionary years in a full economic cycle.