 Complete the following phrase:  Mussels are widespread throughout the south of the country and particularly cultivated in Lake Butrint along the proximity to the Ionian Sea. In 1980, almost 80 mussel cultivation facilities were constructed with an average production of about 2,000 tonnes per year, while in 1989 it increased to 5,000 tonnes per year. Although in Shëngjin operates as well a smaller facility of about 100 hectares. Following the 