G7
In 1975, Italy was invited to attend the first heads-of-government summit, forming the "Group of Six", or G6. Canada joined in 1976, making the G7. The group meets every year, with a different host and president each year. The president of the European Council has attended since 1977. Since 1987, the finane ministers of G7 countries have met at least twice a year at separate meetings. In some years they have met four times.