| Frequency | Number of dividends |
| Annually | 0 |
| Semi-annually | 0 |
| Quarterly | 144 |
| Monthly | 0 |
| Irregularly | 0 |
| 'none' | 0 |
Dividend payment timing:
| Month | Number of dividends |
| January | 0 |
| February | 0 |
| March | 36 |
| April | 0 |
| May | 0 |
| June | 36 |
| July | 0 |
| August | 0 |
| September | 36 |
| October | 0 |
| November | 0 |
| December | 36 |
| Status | Number |
| Cancelled | 0 |
| Discontinued | 0 |
| Omitted | 0 |
| Year | Dividends paid | Increase from previous year | CAGR to 2012 from | Bumpiness to 2012 from |
| 1977 | $ 0.06444 | 6.262% | 19 | |
| 1978 | $ 0.06444 | NO CHANGE | 6.452% | 20 |
| 1979 | $ 0.06444 | NO CHANGE | 6.654% | 20 |
| 1980 | $ 0.06945 | 7.760% | 6.619% | 20 |
| 1981 | $ 0.07500 | 7.999% | 6.575% | 21 |
| 1982 | $ 0.07889 | 5.184% | 6.622% | 21 |
| 1983 | $ 0.08278 | 4.931% | 6.681% | 21 |
| 1984 | $ 0.08667 | 4.699% | 6.752% | 22 |
| 1985 | $ 0.09417 | 8.654% | 6.682% | 22 |
| 1986 | $ 0.09667 | 2.655% | 6.840% | 22 |
| 1987 | $ 0.09667 | NO CHANGE | 7.123% | 23 |
| 1988 | $ 0.10333 | 6.894% | 7.133% | 23 |
| 1989 | $ 0.10667 | 3.226% | 7.306% | 24 |
| 1990 | $ 0.11667 | 9.377% | 7.213% | 24 |
| 1991 | $ 0.11917 | 2.143% | 7.461% | 25 |
| 1992 | $ 0.12667 | 6.294% | 7.519% | 25 |
| 1993 | $ 0.13167 | 3.947% | 7.711% | 26 |
| 1994 | $ 0.14667 | 11.392% | 7.510% | 27 |
| 1995 | $ 0.15333 | 4.545% | 7.687% | 27 |
| 1996 | $ 0.17333 | 13.042% | 7.361% | 28 |
| 1997 | $ 0.18000 | 3.846% | 7.599% | 29 |
| 1998 | $ 0.20000 | 11.112% | 7.352% | 30 |
| 1999 | $ 0.20000 | NO CHANGE | 7.940% | 31 |
| 2000 | $ 0.20000 | NO CHANGE | 8.629% | 32 |
| 2001 | $ 0.13333 | DECREASE | 13.559% | 30 |
| 2002 | $ 0.06667 | DECREASE | 23.267% | 22 |
| 2003 | $ 0.06667 | NO CHANGE | 26.166% | 21 |
| 2004 | $ 0.06667 | NO CHANGE | 29.885% | 20 |
| 2005 | $ 0.07167 | 7.500% | 33.443% | 19 |
| 2006 | $ 0.11000 | 53.486% | 30.367% | 18 |
| 2007 | $ 0.18000 | 63.636% | 24.573% | 12 |
| 2008 | $ 0.25667 | 42.592% | 20.436% | 10 |
| 2009 | $ 0.29333 | 14.285% | 22.559% | 10 |
| 2010 | $ 0.32667 | 11.364% | 28.571% | 8 |
| 2011 | $ 0.44667 | 36.735% | 20.895% | 0 |
| 2012 | $ 0.54000 | 20.895% |
| Yield | Price |
| 0.5% | $108.00 |
| 1.0% | $ 54.00 |
| 1.5% | $ 36.00 |
| 2.0% | $ 27.00 |
| 2.5% | $ 21.60 |
| 3.0% | $ 18.00 |
| 3.5% | $ 15.43 |
| 4.0% | $ 13.50 |
| 4.5% | $ 12.00 |
| 5.0% | $ 10.80 |
| 5.5% | $ 9.82 |
| 6.0% | $ 9.00 |
| 6.5% | $ 8.31 |
| 7.0% | $ 7.71 |
| 7.5% | $ 7.20 |
| 8.0% | $ 6.75 |
| 8.5% | $ 6.35 |
| 9.0% | $ 6.00 |
| 9.5% | $ 5.68 |
| 10.0% | $ 5.40 |