| Period |
UK |
US |
China |
India |
Japan |
Korea |
Saudi Arabia |
Egypt |
| 1971/72 |
6.05 |
2.39 |
1.01 |
0.32 |
0.01 |
0.01 |
0.56 |
5.56 |
| 1972/73 |
5.39 |
2.22 |
1.04 |
0.28 |
0.01 |
0.01 |
0.56 |
5.15 |
| 1973/74 |
4.94 |
2.07 |
1.06 |
0.26 |
0.01 |
0.01 |
0.58 |
5.06 |
| 1974/75 |
4.86 |
2.07 |
1.11 |
0.26 |
0.01 |
0.0040 |
0.59 |
5.31 |
| 1975/76 |
4.13 |
2.07 |
1.06 |
0.23 |
0.01 |
0.004 |
0.59 |
5.31 |
| 1976/77 |
3.54 |
2.07 |
1.09 |
0.23 |
0.01 |
0.004 |
0.59 |
5.31 |
| 1977/78 |
3.78 |
2.07 |
1.18 |
0.24 |
0.01 |
0.004 |
0.59 |
5.31 |
| 1978/79 |
4.15 |
2.07 |
1.28 |
0.25 |
0.01 |
0.004 |
0.62 |
4.13 |
| 1979/80 |
4.62 |
2.07 |
1.36 |
0.26 |
0.01 |
0.004 |
0.62 |
2.96 |
| 1980/81 |
4.74 |
2.07 |
1.32 |
0.26 |
0.01 |
0.004 |
0.62 |
2.96 |
| 1981/82 |
3.80 |
2.07 |
1.16 |
0.23 |
0.01 |
0.004 |
0.61 |
2.96 |
| 1982/83 |
3.35 |
2.07 |
1.05 |
0.21 |
0.01 |
0.004 |
0.60 |
2.96 |
| 1983/84 |
3.01 |
2.07 |
1.01 |
0.20 |
0.01 |
0.004 |
0.59 |
2.96 |
| 1984/85 |
2.54 |
2.07 |
0.77 |
0.17 |
0.01 |
0.004 |
0.58 |
2.96 |
| 1985/86 |
2.99 |
2.07 |
0.66 |
0.17 |
0.01 |
0.004 |
0.57 |
2.96 |
| 1986/87 |
3.16 |
2.07 |
0.56 |
0.16 |
0.01 |
0.004 |
0.55 |
2.96 |
| 1987/88 |
3.63 |
2.07 |
0.56 |
0.16 |
0.02 |
0.004 |
0.55 |
2.96 |
| 1988/89 |
3.56 |
2.07 |
0.56 |
0.14 |
0.02 |
0.004 |
0.55 |
2.96 |
| 1989/90 |
3.37 |
2.07 |
0.49 |
0.12 |
0.01 |
0.004 |
0.55 |
1.88 |
| 1990/91 |
3.85 |
2.07 |
0.41 |
0.11 |
0.02 |
0.004 |
0.55 |
0.84 |
| 1991/92 |
3.64 |
2.07 |
0.38 |
0.08 |
0.02 |
0.004 |
0.55 |
0.62 |
| 1992/93 |
6.74 |
4.27 |
0.75 |
0.15 |
0.04 |
0.01 |
1.14 |
1.28 |
| 1993/94 |
7.65 |
5.11 |
0.73 |
0.16 |
0.05 |
0.01 |
1.36 |
1.52 |
| 1994/95 |
9.27 |
5.86 |
0.69 |
0.19 |
0.06 |
0.01 |
1.56 |
1.73 |
| 1995/96 |
9.75 |
6.31 |
0.76 |
0.18 |
0.06 |
0.01 |
1.68 |
1.86 |
| 1996/97 |
10.50 |
6.50 |
0.78 |
0.18 |
0.06 |
0.01 |
1.73 |
1.92 |
| 1997/98 |
11.32 |
6.88 |
0.83 |
0.18 |
0.05 |
0.01 |
1.84 |
2.03 |
| 1998/99 |
12.33 |
7.51 |
0.91 |
0.18 |
0.06 |
0.01 |
2.00 |
2.21 |
| 1999/00 |
12.97 |
8.15 |
0.98 |
0.19 |
0.08 |
0.01 |
2.17 |
2.38 |
| 2000/01 |
12.10 |
8.33 |
1.01 |
0.18 |
0.07 |
0.01 |
2.22 |
2.24 |
| 2001/02 |
12.34 |
8.54 |
1.03 |
0.18 |
0.07 |
0.01 |
2.28 |
1.94 |
| 2002/03 |
13.60 |
8.58 |
1.04 |
0.18 |
0.07 |
0.01 |
2.29 |
1.68 |
| 2003/04 |
15.00 |
8.62 |
1.04 |
0.19 |
0.08 |
0.01 |
2.30 |
1.40 |
| 2004/05 |
16.08 |
8.65 |
1.04 |
0.19 |
0.08 |
0.01 |
2.31 |
1.45 |
| 2005/06 |
15.43 |
8.68 |
1.08 |
0.19 |
0.08 |
0.01 |
2.32 |
1.51 |
| 2006/07 |
17.00 |
8.79 |
1.13 |
0.20 |
0.07 |
0.01 |
2.35 |
1.54 |
| 2007/08 |
18.52 |
9.24 |
1.27 |
0.23 |
0.08 |
0.01 |
2.47 |
1.69 |
| 2008/09 |
16.75 |
10.44 |
1.53 |
0.22 |
0.11 |
0.01 |
2.79 |
1.87 |
| 2009/10 |
20.36 |
12.89 |
1.89 |
0.28 |
0.14 |
0.01 |
3.44 |
2.32 |
| 2010/11 |
25.67 |
16.12 |
2.43 |
0.36 |
0.19 |
0.01 |
4.30 |
2.82 |
| 2011/12 |
27.31 |
17.25 |
2.72 |
0.34 |
0.22 |
0.02 |
4.60 |
2.88 |
|