Catholics lie to themselves about statistics. There is a small and very orthodox group of young Catholics who have been properly catechized, mostly in home schooling families, or families which found NAPCIS schools. However, here is real data.
Church-going indicates morality and belief. although in some countries, like Malta, there are high statistics, but it is a contracepting Catholic populace, as one can see from the very low birthrate. I have that information in posts on this blog.
Weekly church-goers of any denomination: Russia 3%, UK 2% to 4%; France 4.5%; Spain 20%; America 41%
The average age of the priest in Spain is 65. The average age of the priest in America as of statistics of May 2012 is 59.
The fall from Catholicism is old Catholic countries is replaced by agnosticism. Contraception statistics seen in birth rates show the real problem-no replacement in so-called Christian countries and the lack of families. 33% of households in England are run by singles.
Even Latinas are using birth control now. 97 percent of sexually active Latinas in America between the ages 15 and 44 have used some form of contraception. I have checked all these sources.
Religious feeling may be up but practice and morality are not.
I have written a lot on Catholic singles. You can follow the tags. This problem is getting worse for many reasons.
Catholic singles must decide on a vocation and not pretend being single is a vocation. It may be a sad reflection of either the lack of the ability to commit or it may be a problem in one's geographical area. But, as I have written, one must choose a real vocation in traditional sense of the word, unless one is taking care of aged parents or has a physical reason for either not becoming a religious, a priest or a nun, or getting married.
The number of practising Catholics is dwindling in most places. A practising Catholic is one who abides by the Teaching Magisterium of the Church. There are many, many dissident and disobedient Catholics. One can be disobedient in many ways, such as in supporting abortion, using contraceptions, or even following false prophets after being told these are wrong by the Vatican. One can be disobedient as to tithing, or the giving of alms. The greatest area of disobedience lies in the fact that Catholics, all of us, are called to evangelise by our baptism. This is not happening.
We shall be a lean and mean minority of people in the world. I have seen this drop in religion all my adult life and it is escalating. The fastest growing religions in the world are all man-made religions; Islam and Bahai, followed by the pagan religions of Sikiism, Jainism and and Hinduism, because of Indians birth-rate.