Age, gender and frequency of CT scan
| Year | Total | Age n (%) | Male n (%) | CT scan n (%) | ||||
|---|---|---|---|---|---|---|---|---|
| 0–24 | 25–49 | 50–75 | >75 | Mean (SD) | ||||
| 1990 | 619 | 243 (39.3%) | 208 (33.6%) | 118 (19.1%) | 50 (8.1%) | 36.1 (22.2) | 450 (72.7%) | 208 (33.6%) |
| 1991 | 1306 | 488 (37.4%) | 450 (34.5%) | 245 (18.8%) | 123 (9.4%) | 36.9 (23.1) | 964 (73.8%) | 458 (35.1%) |
| 1992 | 1488 | 518 (34.8%) | 513 (34.5%) | 330 (22.2%) | 127 (8.5%) | 38.1 (22.6) | 1080 (72.6%) | 484 (32.5%) |
| 1993 | 1494 | 491 (32.9%) | 516 (34.5%) | 328 (22%) | 159 (10.6%) | 39.9 (23.3) | 1066 (71.4%) | 438 (29.3%) |
| 1994 | 2939 | 1071 (36.4%) | 954 (32.5%) | 631 (21.5%) | 283 (9.6%) | 38.3 (23.4) | 2183 (74.3%) | 851 (29%) |
| 1995 | 3650 | 1259 (34.5%) | 1335 (36.6%) | 760 (20.8%) | 296 (8.1%) | 37.6 (22.4) | 2688 (73.6%) | 1180 (32.3%) |
| 1996 | 3468 | 1373 (39.6%) | 1138 (32.8%) | 673 (19.4%) | 284 (8.2%) | 36.1 (22.7) | 2592 (74.7%) | 1144 (33%) |
| 1997 | 2949 | 972 (33%) | 1099 (37.3%) | 624 (21.2%) | 254 (8.6%) | 38.3 (22.4) | 2178 (73.9%) | 1083 (36.7%) |
| 1998 | 2753 | 900 (32.7%) | 1059 (38.5%) | 537 (19.5%) | 257 (9.3%) | 38.2 (22.5) | 1998 (72.6%) | 1127 (40.9%) |
| 1999 | 3040 | 1004 (33%) | 1111 (36.5%) | 638 (21%) | 287 (9.4%) | 38.5 (23) | 2220 (73%) | 1455 (47.9%) |
| 2000 | 3215 | 1009 (31.4%) | 1220 (37.9%) | 732 (22.8%) | 254 (7.9%) | 39 (22.1) | 2406 (74.8%) | 1709 (53.2%) |
| 2001 | 3055 | 1047 (34.3%) | 1138 (37.3%) | 611 (20%) | 259 (8.5%) | 38.2 (22.1) | 2306 (75.5%) | 1717 (56.2%) |
| 2002 | 3221 | 1047 (32.5%) | 1205 (37.4%) | 687 (21.3%) | 282 (8.8%) | 39 (22.2) | 2389 (74.2%) | 1844 (57.2%) |
| 2003 | 3565 | 1164 (32.7%) | 1354 (38%) | 771 (21.6%) | 276 (7.7%) | 38.8 (21.6) | 2640 (74.1%) | 2031 (57%) |
| 2004 | 3358 | 1077 (32.1%) | 1265 (37.7%) | 718 (21.4%) | 298 (8.9%) | 39.5 (22) | 2489 (74.1%) | 1973 (58.8%) |
| 2005 | 3233 | 999 (30.9%) | 1160 (35.9%) | 765 (23.7%) | 309 (9.6%) | 40.6 (22.4) | 2393 (74%) | 1989 (61.5%) |
| 2006 | 2976 | 912 (30.6%) | 1142 (38.4%) | 663 (22.3%) | 259 (8.7%) | 40.2 (21.7) | 2249 (75.6%) | 1970 (66.2%) |
| 2007 | 4117 | 1143 (27.8%) | 1573 (38.2%) | 965 (23.4%) | 436 (10.6%) | 42 (22.3) | 3061 (74.4%) | 3024 (73.5%) |
| 2008 | 4691 | 1288 (27.5%) | 1652 (35.2%) | 1161 (24.7%) | 590 (12.6%) | 43.4 (22.9) | 3443 (73.4%) | 3606 (76.9%) |
| 2009 | 6701 | 1651 (24.6%) | 2327 (34.7%) | 1761 (26.3%) | 962 (14.4%) | 45.6 (23.1) | 4922 (73.5%) | 5415 (80.8%) |
| 2010 | 9583 | 2162 (22.6%) | 3065 (32%) | 2651 (27.7%) | 1705 (17.8%) | 47.7 (24.4) | 6773 (70.7%) | 7975 (83.2%) |
| 2011 | 12 719 | 2720 (21.4%) | 4073 (32%) | 3373 (26.5%) | 2553 (20.1%) | 48.9 (24.6) | 8959 (70.4%) | 10 790 (84.8%) |
| 2012 | 15 089 | 2834 (18.8%) | 4319 (28.6%) | 4282 (28.4%) | 3654 (24.2%) | 51.8 (25) | 10 347 (68.6%) | 13 044 (86.4%) |
| 2013 | 17 238 | 2933 (17%) | 4665 (27.1%) | 4999 (29%) | 4641 (26.9%) | 53.8 (25.2) | 11 778 (68.3%) | 14 963 (86.8%) |