| Frequency | Number of dividends |
| Annually | 28 |
| Semi-annually | 0 |
| Quarterly | 0 |
| Monthly | 0 |
| Irregularly | 0 |
| 'none' | 0 |
Dividend payment timing:
| Month | Number of dividends |
| January | 0 |
| February | 0 |
| March | 28 |
| April | 0 |
| May | 0 |
| June | 0 |
| July | 0 |
| August | 0 |
| September | 0 |
| October | 0 |
| November | 0 |
| December | 0 |
| Status | Number |
| Cancelled | 0 |
| Discontinued | 0 |
| Omitted | 0 |
| Year | Dividends paid | Increase from previous year | CAGR to 2012 from | Bumpiness to 2012 from |
| 1985 | $ 0.08000 | 3.989% | 7 | |
| 1986 | $ 0.08000 | NO CHANGE | 4.145% | 7 |
| 1987 | $ 0.08000 | NO CHANGE | 4.315% | 7 |
| 1988 | $ 0.08000 | NO CHANGE | 4.498% | 8 |
| 1989 | $ 0.08000 | NO CHANGE | 4.699% | 8 |
| 1990 | $ 0.08000 | NO CHANGE | 4.917% | 8 |
| 1991 | $ 0.08000 | NO CHANGE | 5.157% | 8 |
| 1992 | $ 0.08000 | NO CHANGE | 5.422% | 8 |
| 1993 | $ 0.08000 | NO CHANGE | 5.716% | 8 |
| 1994 | $ 0.08000 | NO CHANGE | 6.042% | 8 |
| 1995 | $ 0.08000 | NO CHANGE | 6.409% | 8 |
| 1996 | $ 0.08000 | NO CHANGE | 6.823% | 8 |
| 1997 | $ 0.08000 | NO CHANGE | 7.294% | 8 |
| 1998 | $ 0.08000 | NO CHANGE | 7.835% | 8 |
| 1999 | $ 0.08000 | NO CHANGE | 8.463% | 8 |
| 2000 | $ 0.08000 | NO CHANGE | 9.199% | 8 |
| 2001 | $ 0.08000 | NO CHANGE | 10.076% | 8 |
| 2002 | $ 0.08000 | NO CHANGE | 11.138% | 8 |
| 2003 | $ 0.08000 | NO CHANGE | 12.450% | 7 |
| 2004 | $ 0.10000 | 25.000% | 10.973% | 6 |
| 2005 | $ 0.11000 | 10.000% | 11.112% | 7 |
| 2006 | $ 0.13000 | 18.182% | 9.976% | 6 |
| 2007 | $ 0.16000 | 23.077% | 7.528% | 3 |
| 2008 | $ 0.18000 | 12.500% | 6.320% | 2 |
| 2009 | $ 0.19000 | 5.556% | 6.576% | 2 |
| 2010 | $ 0.20000 | 5.263% | 7.238% | 2 |
| 2011 | $ 0.21000 | 5.000% | 9.524% | 0 |
| 2012 | $ 0.23000 | 9.524% |
| Yield | Price |
| 0.5% | $ 46.00 |
| 1.0% | $ 23.00 |
| 1.5% | $ 15.33 |
| 2.0% | $ 11.50 |
| 2.5% | $ 9.20 |
| 3.0% | $ 7.67 |
| 3.5% | $ 6.57 |
| 4.0% | $ 5.75 |
| 4.5% | $ 5.11 |
| 5.0% | $ 4.60 |
| 5.5% | $ 4.18 |
| 6.0% | $ 3.83 |
| 6.5% | $ 3.54 |
| 7.0% | $ 3.29 |
| 7.5% | $ 3.07 |
| 8.0% | $ 2.88 |
| 8.5% | $ 2.71 |
| 9.0% | $ 2.56 |
| 9.5% | $ 2.42 |
| 10.0% | $ 2.30 |