| GLE No. | Date | Increase % |
| GLE17 | 28.1.1967 | 5.0 b,c |
| GLE20 | 25.2.1969 | 1.3 d |
| GLE21 | 30.3.1969 | 1.5 b,d,e |
| GLE23 | 1.9.1971 | 2.1 b,c,d |
| GLE25 | 7.8.1972 | 1.9 |
| GLE29 | 24.9.1977 | 3.9 b |
| GLE30 | 22.11.1977 | 4.2 |
| GLE31 | 7.5.1978 | 32.9 |
| GLE32 | 23.9.1978 | 1.2 d |
| GLE36 | 12.10.1981 | 3.6 |
| GLE37 | 26.11.1982 | 1.5 g |
| GLE38 | 7.12.1982 | 9.1 |
| GLE39 | 16.2.1984 | 3.7 |
| GLE41 | 16.8.1989 | 2.6 i |
| GLE42 | 29.9.1989 | 178.3 |
| GLE43 | 19.10.1989 | 9.7 |
| GLE44 | 22.10.1989 | 1.5 g |
| GLE45 | 24.10.1989 | 22.2 |
| GLE46 | 15.11.1989 | 1.4 |
| GLE47 | 21.5.1990 | 5.1 |
| GLE48 | 24.5.1990 | 6.5 |
| GLE49 | 26.5.1990 | 1.3 g |
| GLE51 | 11.6.1991 | 2.4 |
| GLE52 | 15.6.1991 | 3.6 |
| GLE53 | 25.6.1992 | 1.2 |
| GLE54 | 2.11.1992 | 1.1 |
| GLE55 | 6.11.1997 | 3.0 |
| GLE57 | 6.5.1998 | 1.2 |
| GLE59 | 14.7.2000 | 2.2 |
| GLE60 | 15.4.2001 | 12.2 |
| GLE61 | 18.4.2001 | 2.6 |
| GLE63 | 26.12.2001 | 1.1 |
| GLE64 | 24.8.2002 | 1.3 |
| GLE65 | 28.10.2003 | 9.2 |
| GLE66 | 29.10.2003 | 3.1 |
| GLE67 | 2.11.2003 | 3.6 |
| GLE68 | 17.1.2005 | 1.7 |
| GLE69 | 20.1.2005 | 20.6 |
| GLE70 | 13.12.2006 | 12.2 |