| Men | Women | ||||||
---|---|---|---|---|---|---|---|---|
Year | Prevalence (%) | S.E. | Freq. | N | Prevalence (%) | S.E. | Freq. | N |
2002 | 19.57 | 0.97 | 664 | 3410 | 28.21 | 1.09 | 918 | 3417 |
2005 | 19.54 | 0.97 | 651 | 3401 | 29.05 | 1.11 | 936 | 3365 |
2008 | 16.92 | 0.95 | 537 | 3172 | 26.13 | 1.08 | 826 | 3293 |
2012 | 18.43 | 0.73 | 518 | 2807 | 27.43 | 0.83 | 778 | 2853 |