I think our industry can't be compared to other industries "apples to apples." So to say 30% or 66% is "bad" by comparison to other industries may not be appropriate. There are so many factors otnot within our control that cause our clients to go elsewhere. The economy, employment, and family all play a huge part of clients decisions, whereas in other industries they are not part of the decision at all.
My 2009 turnover was 58%, 2008 was 39%. I see this as a direct response to the econcomy downturn. As the recession hit, residents lost their jobs and had to double up or move in with family, leaving us with two people moving out and only one (if that) moving in. We had to work twice as hard to find new clients, but these new clients were also on precarious ground financially.
Location is also a major factor. I am next door to a shopping mall, and on six public transit routes. Thus, I heavily attract young, low income retail workers who can't afford a car. After gaining a few years work experience, they move on to a grown up job and move to a place with parking.
No matter how good of service I provide, some of my clients must move on. And while I know its not the best thing for my property, I'm happy for them.