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| Growth of $10,000 | 10-31-09 | | |
 | Fund: BlackRock MuniYield |  | Category: Muni National Long |  | Index: BarCap Municipal TR USD | | |
| Monthly Premium/Discount % | | | |
 | High |  | Low | | |
 |  |  |  |  |  | | Average | -0.83 | 3.56 | 1.27 | -2.11 | -2.76 | | High | 3.27 | 5.81 | 5.51 | 2.78 | 2.25 | | Low | -4.36 | -0.35 | -5.12 | -12.09 | -6.18 | | |
| Performance History | 11-20-09 | | |
| | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 |
YTD | | Market Return % | 7.22 | 9.58 | 13.72 | 16.27 | 8.89 | -3.37 | -26.03 | 33.25 | | NAV return % | 11.70 | 12.68 | 10.10 | 8.23 | 8.39 | -0.60 | -22.90 | 35.31 | | +/- Category (NAV) | 3.25 | 7.78 | 6.33 | 5.13 | 3.82 | -1.87 | -13.45 | --- | | +/- BarCap Municipal TR USD (NAV) | --- | --- | --- | --- | --- | --- | --- | --- | | % Rank in Category (NAV) | 56 | 5 | 5 | 14 | 22 | 56 | 67 | --- | | | | | | | | | | |
| Trailing Total Returns | through 11-20-09 | | |
| | Mkt Return % | NAV Return % | % Rank in Cat | | 1-Day | 0.08 | 0.15 | --- | | 1-Week | 0.73 | 0.00 | --- | | 1-Month | -2.56 | -2.09 | --- | | 3-Month | 4.96 | 7.19 | --- | | Year-to-date | 33.25 | 35.31 | --- | | 1-Year | 43.95 | 26.78 | --- | | 3-Year Annualized | -1.96 | 1.30 | --- | | 5-Year Annualized | 4.72 | 4.47 | --- | | 10-Yr Annualized | 6.83 | 6.49 | --- | | | | | | | | |
| Weekly Premium/Discount % | | | |
| Historical Quarterly NAV Returns | | | |
| Q1 | Q2 | Q3 | Q4 | | 2009 | 9.73 | 9.16 | 18.53 | --- | | 2008 | -3.51 | -0.25 | -8.53 | -12.42 | | 2007 | 1.10 | -1.32 | 0.62 | -0.98 | | 2006 | 1.51 | 0.38 | 4.63 | 1.67 | | 2005 | 1.77 | 5.11 | 0.33 | 0.85 | | 2004 | 2.25 | -2.55 | 6.42 | 3.82 | | 2003 | -0.19 | 5.78 | 2.55 | 4.07 | | 2002 | 2.56 | 4.59 | 4.92 | -0.74 | | 2001 | 3.92 | 0.66 | 2.11 | -2.07 | | 2000 | 4.21 | 0.82 | 3.10 | 1.78 | | 1999 | 0.63 | -3.73 | -3.67 | -5.21 | | 1998 | 1.62 | 1.70 | 4.12 | -1.26 | | |
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