Ireland may be enjoying stellar economic growth and seen as one of the best places in the world to live, but its inhabitants are apparently also the globe's loneliest.

Google Trends, which works out how many searches have been done via the Internet search engine on particular terms, showed the word "lonely" was entered most frequently by Internet users in Ireland: http://www.google.com/trends?q=lonely.

The Irish, enjoying new-found wealth and a flood of immigration following more than a century of economic decline, are followed in the misery stakes by residents of Singapore and New Zealand -- although Singaporeans are the most frequent searchers of "happiness."

Google Trends calculates the ratio of searches for a given term coming from each city, region or language divided by total Google searches coming from the same area.

Ireland's capital, Dublin, topped the city list for "lonely" searches, followed by Melbourne, Australia and Auckland, New Zealand.

In 2004, the Economist magazine named Ireland the best place to live in the world in a "quality of life" assessment.