The total pig breeding herd in England for each of the last 10 years is shown in the table:
Number of pigs in breeding herd1998629,9151999573,0342000502,6972001488,9802002457,8712003418,0532004424,4852005386,2072006386,1092007374,861 Notes:1. Pig breeding herd is sows and gilts in pig and other sows either being suckled or dry sows being kept for further breeding.2. These totals are estimates based on a sample survey and are therefore subject to a degree of sampling error.Source: June Survey of Agriculture