QUESTION TEXT:

1970-1988: (IF ANY RELIGIOUS PREFERENCE) "Would you say you/do you go to (church/synagogue) every week, almost every week, once or twice a month, a few times a year, or never?" 

1990 and later: "Lots of things come up that keep people from attending religious services even if they want to. Thinking about your life these days, do you ever attend religious services, apart from occasional weddings, baptisms or funerals?" (IF YES:) "Do you go to religious services every week, almost every week, once or twice a month, a few times a year, or never?"