Closed-End National Municipal Portfolio Series 12

matured

Deposit Date: 5/14/2008
Non-Reoffered Date: 11/12/2008
Termination Date: 5/8/2013

Performance

as of 5/8/2013

Trust

Cumulative Total Return1 Average Annual Total Return2
Distributions Reinvested 3 Month 6 Month YTD Since Inception 1 Year 3 Year 5 Year Since Inception
With Transactional Sales Charge (183869197) -7.26% -6.85% -5.68% 42.37% 2.30% 8.74% 7.34%
Without Transactional Sales Charge (183869213) -2.89% -2.46% -1.24% 49.00% 7.09% 10.40% 8.33%
Distributions Received in Cash
With Transactional Sales Charge (183869189) -7.27% -6.82% -5.67% 32.34% 2.28% 7.87% 5.78%
Without Transactional Sales Charge (183869205) -2.89% -2.42% -1.23% 38.50% 7.08% 9.51% 6.75%

Benchmark

   
Barclays Capital Municipal Bond 0.75% 1.10% 1.34% 33.51% 4.37% 6.07% 5.97%
to
Deposit Date: 5/14/2008
Non-Reoffered Date: 11/12/2008
Termination Date: 5/8/2013

Performance

between

Trust

Cumulative Total Return1 Average Annual Total Return2
Distributions Reinvested    
With Transactional Sales Charge (183869197) 42.37% 7.34%
Without Transactional Sales Charge (183869213) 49.00% 8.33%
Distributions Received in Cash    
With Transactional Sales Charge (183869189) 32.34% 5.78%
Without Transactional Sales Charge (183869205) 38.50% 6.75%

Benchmark

   
Barclays Capital Municipal Bond 33.51% 5.97%