| Frequency | Number of dividends |
| Annually | 0 |
| Semi-annually | 0 |
| Quarterly | 132 |
| Monthly | 0 |
| Irregularly | 0 |
| 'none' | 0 |
Dividend payment timing:
| Month | Number of dividends |
| January | 0 |
| February | 0 |
| March | 33 |
| April | 0 |
| May | 0 |
| June | 33 |
| July | 0 |
| August | 0 |
| September | 33 |
| October | 0 |
| November | 0 |
| December | 33 |
| Status | Number |
| Cancelled | 0 |
| Discontinued | 0 |
| Omitted | 0 |
| Year | Dividends paid | Increase from previous year | CAGR to 2012 from | Bumpiness to 2012 from |
| 1980 | $ 0.01886 | 12.759% | 7 | |
| 1981 | $ 0.02028 | 7.506% | 12.933% | 7 |
| 1982 | $ 0.02326 | 14.709% | 12.874% | 7 |
| 1983 | $ 0.02721 | 16.984% | 12.735% | 7 |
| 1984 | $ 0.03160 | 16.131% | 12.615% | 7 |
| 1985 | $ 0.03599 | 13.891% | 12.568% | 7 |
| 1986 | $ 0.03885 | 7.932% | 12.751% | 7 |
| 1987 | $ 0.04477 | 15.251% | 12.652% | 7 |
| 1988 | $ 0.05037 | 12.503% | 12.658% | 8 |
| 1989 | $ 0.05136 | 1.961% | 13.148% | 7 |
| 1990 | $ 0.05136 | NO CHANGE | 13.785% | 7 |
| 1991 | $ 0.05877 | 14.422% | 13.755% | 7 |
| 1992 | $ 0.07333 | 24.786% | 13.229% | 7 |
| 1993 | $ 0.09333 | 27.271% | 12.535% | 6 |
| 1994 | $ 0.11333 | 21.430% | 12.060% | 6 |
| 1995 | $ 0.12000 | 5.883% | 12.435% | 6 |
| 1996 | $ 0.12000 | NO CHANGE | 13.261% | 5 |
| 1997 | $ 0.12000 | NO CHANGE | 14.205% | 4 |
| 1998 | $ 0.13333 | 11.110% | 14.430% | 4 |
| 1999 | $ 0.15333 | 15.001% | 14.386% | 4 |
| 2000 | $ 0.16500 | 7.610% | 14.970% | 4 |
| 2001 | $ 0.18167 | 10.101% | 15.423% | 4 |
| 2002 | $ 0.20667 | 13.760% | 15.590% | 4 |
| 2003 | $ 0.23333 | 12.903% | 15.893% | 4 |
| 2004 | $ 0.29333 | 25.714% | 14.720% | 2 |
| 2005 | $ 0.34667 | 18.183% | 14.234% | 2 |
| 2006 | $ 0.40000 | 15.384% | 14.043% | 2 |
| 2007 | $ 0.45333 | 13.333% | 14.186% | 3 |
| 2008 | $ 0.53333 | 17.647% | 13.337% | 2 |
| 2009 | $ 0.61333 | 15.000% | 12.788% | 2 |
| 2010 | $ 0.70767 | 15.381% | 11.513% | 2 |
| 2011 | $ 0.80000 | 13.048% | 10.000% | 0 |
| 2012 | $ 0.88000 | 10.000% |
| Yield | Price |
| 0.5% | $176.00 |
| 1.0% | $ 88.00 |
| 1.5% | $ 58.67 |
| 2.0% | $ 44.00 |
| 2.5% | $ 35.20 |
| 3.0% | $ 29.33 |
| 3.5% | $ 25.14 |
| 4.0% | $ 22.00 |
| 4.5% | $ 19.56 |
| 5.0% | $ 17.60 |
| 5.5% | $ 16.00 |
| 6.0% | $ 14.67 |
| 6.5% | $ 13.54 |
| 7.0% | $ 12.57 |
| 7.5% | $ 11.73 |
| 8.0% | $ 11.00 |
| 8.5% | $ 10.35 |
| 9.0% | $ 9.78 |
| 9.5% | $ 9.26 |
| 10.0% | $ 8.80 |