Table 3 Countries classified according to the percentage of unspecified codes in 2004–2005 and the PC from 2004 to 2005 to 2014–2015

Percent of unspecified code in 2004–2005,%

High (>  62)

El Salvador (100 to 79, − 21%); Portugal (92 to 64, − 31%); Paraguay (73 to 23, − 68%); Spain (67 to 47, − 30%)

Thailand (100 to 99, − 1%); Guatemala (98 to 100, + 2%); Israel (98 to 96, − 1%); Guyana (98 to 100, + 2%); Uruguay (92 to 98, + 6%); Taiwan (91 to 75, − 18%); Chile (87 to 84, − 3%); Peru (85 to 91, + 7%); France (82 to 82, − 1%); Argentina (64 to 58, − 9%)

South Africa (93 to 100, + 7%); Norway (76 to 83, + 9%); Switzerland (71 to 76, + 7%); Mauritius (70 to 100, + 43%); Italy (69 to 78, + 13%); Costa Rica (65 to 99, + 51%)

Moderate (37–62)

Netherlands (61 to 44, − 28%); Serbia (59 to 23, − 61%); Ecuador (56 to 40, − 29%); Czech (54 to 31, − 44%); Mexico (52 to 37, − 29%); Croatia (42 to 2, − 95%); Colombia (39 to 11, − 71%); Canada (39 to 22, − 44%)

Moldova (62 to 56, − 10%); Bulgaria (59 to 56, − 5%); Kyrgyzstan (55 to 54, − 2%); Uzbekistan (53 to 43, − 19%); Romania (52 to 53, + 2%); Brazil (44 to 37, − 15%); Germany (39 to 34, − 13%)

Morocco (59 to 74, + 25%); Sweden (48 to 52, + 8%); Georgia (48 to 56, + 18%); Malaysia (39 to 91, + 133%)*; Nicaragua (39 to 76, + 95%); Korea (37 to 51, + 38%)

Low (< 37)

Poland (36 to 3, −91%); Estonia (31 to 8, − 74%); U.S.A. (23 to 14, − 39%); Australia (19 to 15, − 24%); Hong Kong (18 to 5, − 71%); Hungary (16 to 4, − 73%); Latvia (12 to 2, − 83%); Finland (2 to 0, − 100%)*

Egypt (34 to 34, + 1%); Denmark (11 to 10, − 4%); Slovakia (10 to 10, − 6%); Cuba (1 to 1, + 2%)

Belgium (36 to 78, + 119%); Venezuela (31 to 35, + 15%); U.K. (18 to 31, + 74%); Austria (15 to 19, + 29%); Japan (10 to 11, + 12%); Panama (4 to 13, + 190%); New Zealand (4 to 9, + 153%)*; Lithuania (2 to 9, + 250%)*