VIENNA, Austria — Significantly fewer Austrians left the Roman Catholic Church in 2006, the Archdiocese of Vienna said Tuesday — a sign that a mass exodus of believers triggered by priest sex scandals and the nation's unpopular church tax is slowing.

Across the overwhelmingly Catholic country, 36,645 people formally withdrew from the church last year, a nearly 18 percent drop from the 44,609 believers who canceled their memberships in 2005, the archdiocese said.

The exodus peaked in 2004, when 45,000 Austrians left a church bedeviled by scandal and a chronic shortage of priests.

Many cited disgust over the discovery of up to 40,000 lurid images at a seminary in St. Poelten, 50 miles west of Vienna, including child porn and photos of young candidates for the priesthood fondling each other and their older religious instructors.

Other dropouts expressed discontent with a church tax collected by the government for the church — a levy that averages more than $300 a year. Catholics wishing to avoid paying it must formally renounce their affiliation to their church.

Since 1995, when accusations surfaced that the late Cardinal Hans Hermann Groer molested youths at a monastery in the 1970s, the Austrian church has lost almost half a million members, officials say.

The Catholic Church — which has 1 billion members worldwide — also has gone through trials and tribulations elsewhere in Europe. In France, for instance, the newspaper Le Monde published a poll Tuesday that found only half the population considers itself Catholic — a 16-point drop since 1994 — even though the official statistics say the country is over 80 percent Catholic. No margin of error was provided for the poll.

Catholics in most nations simply stop going to church. In Belgium, "very few people formally leave the church," said Abbe Eric de Beukelaer of the Belgian Bishops Conference. "As in most modern societies ... they leave it silently if they do — just stop going to church or say they don't believe."

In Austria, even if the rate of withdrawals keeps slowing, parishes will conduct far more funerals than baptisms because of changing demographics, said Elizabeth Rathgeb, who works with the Diocese of Innsbruck.

"People today are more individualistic. They don't want to be part of a big organization that tells them what to think and believe," said Georg Plank, a Catholic lay leader in the southern city of Graz. "Perhaps some still suspect it's like that in the church."