| Year of Publication | Britain | Russia | India | China |
| 1996 | 5.282 | 1.6 | 3 | 0.583 |
| 1997 | 7.012 | 3 | 14.133 | 1.273 |
| 1998 | 5.675 | 15.571 | 6.741 | 11.6 |
| 1999 | 4.638 | 2.167 | 3.321 | 3.5 |
| 2000 | 9.852 | 5.667 | 4.706 | 16.556 |
| 2001 | 7.342 | 0.667 | 4.5 | 6.273 |
| 2002 | 10.374 | 24 | 3.9 | 5.444 |
| 2003 | 6.062 | 5.143 | 3.355 | 3.154 |
| 2004 | 5.973 | 5.571 | 2.963 | 4.853 |
| 2005 | 6.699 | 1.333 | 5.027 | 7.971 |
| 2006 | 5.471 | 1.438 | 2.45 | 4.24 |
| 2007 | 6.303 | 0.333 | 3.935 | 4.875 |
| 2008 | 4.145 | 3 | 4.567 | 4.609 |
| 2009 | 3.41 | 1.714 | 2.623 | 3.31 |
| 2010 | 2.072 | 4.1 | 1.676 | 1.561 |
| 2011 | 0.825 | 1.154 | 0.5 | 0.507 |
| 2012 | 0.221 | 0 | 0.061 | 0.055 |