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Deferred Acquisition Costs
12 Months Ended
Dec. 31, 2019
Insurance [Abstract]  
Deferred Acquisition Costs
Note 5—Deferred Acquisition Costs

An analysis of DAC is as follows:
Year Ended December 31,
2019  2018  2017  
Balance at beginning of year
$4,137,925  $3,958,063  $3,783,158  
Additions:
Deferred during period:
Commissions534,735  497,459  465,920  
Other expenses218,926  202,092  194,214  
Total deferred753,661  699,551  660,134  
Foreign exchange adjustment4,299  —  5,712  
Adjustment attributable to unrealized investment losses(1)
—  5,549  —  
Total additions757,960  705,100  665,846  
Deductions:
Amortized during period(551,726) (516,690) (490,403) 
Foreign exchange adjustment—  (8,548) —  
Adjustment attributable to unrealized investment gains(1)
(2,218) —  (538) 
Total deductions(553,944) (525,238) (490,941) 
Balance at end of year
$4,341,941  $4,137,925  $3,958,063  
(1)Represents amounts pertaining to investments relating to universal life-type products.