A quick google says -3400 (0.7%) per year: http://www.nptd.gov.sg/content/NPTD/home/_jcr_content/par_content/download_12/file.res/Parliamentary%20reply%20on%20number%20of%20Singapore%20PRs%20who%20gave%20up%20their%20PR%20status%20between%202006%20and%202011%20and%20the%20common%20reasons%20cited.%2...