year ended december 31 , 2006 compared to year ended december 31 , 2005 net revenues increased $ 149.6 million , or 53.2% ( 53.2 % ) , to $ 430.7 million in 2006 from $ 281.1 million in 2005 .
this increase was the result of increases in both our net sales and license revenues as noted in the product category table below. .

Year Ended December 31,
<i>(In thousands)</i>
2006
2005
$ Change
% Change
Men’s
$255,681
$189,596
$66,085
34.9%
Women’s
85,695
53,500
32,195
60.2%
Youth
31,845
18,784
13,061
69.5%
Apparel
373,221
261,880
111,341
42.5%
Footwear
26,874
—
26,874
—
Accessories
14,897
9,409
5,488
58.3%
Total net sales
414,992
271,289
143,703
53.0%
License revenues
15,697
9,764
5,933
60.8%
Total net revenues
$430,689
$281,053
$149,636
53.2%

net sales increased $ 143.7 million , or 53.0% ( 53.0 % ) , to $ 415.0 million for the year ended december 31 , 2006 from $ 271.3 million during the same period in 2005 as noted in the table above .
the increase in net sales primarily reflects : 2022 $ 26.9 million of footwear product sales , primarily football cleats introduced in the second quarter of 2006 , and baseball cleats introduced in the fourth quarter of 2006 ; 2022 continued unit volume growth of our existing products , such as coldgear ae compression products , primarily sold to existing retail customers due to additional retail stores and expanded floor space ; 2022 growth in the average selling price of apparel products within all categories ; 2022 increased women 2019s and youth market penetration by leveraging current customer relationships ; and 2022 product introductions subsequent to december 31 , 2005 within all product categories , most significantly in our compression and training products .
license revenues increased $ 5.9 million , or 60.8% ( 60.8 % ) , to $ 15.7 million for the year ended december 31 , 2006 from $ 9.8 million during the same period in 2005 .
this increase in license revenues was a result of increased sales by our licensees due to increased distribution , continued unit volume growth , new product offerings and new licensing agreements , which included distribution of products to college bookstores and golf pro shops .
gross profit increased $ 79.7 million to $ 215.6 million in 2006 from $ 135.9 million in 2005 .
gross profit as a percentage of net revenues , or gross margin , increased approximately 180 basis points to 50.1% ( 50.1 % ) in 2006 from 48.3% ( 48.3 % ) in 2005 .
this increase in gross margin was primarily driven by the following : 2022 lower product costs as a result of variations in product mix and greater supplier discounts for increased volume and lower cost sourcing arrangements , accounting for an approximate 170 basis point increase ; 2022 decreased close-out sales in the 2006 period compared to the 2005 period , accounting for an approximate 70 basis point increase ; 2022 lower customer incentives as a percentage of net revenues , primarily driven by changes to certain customer agreements which decreased discounts while increasing certain customer marketing expenditures recorded in selling , general and administrative expenses , accounting for an approximate 70 basis point increase; .

Question: Analyse this data from a financial earnings document. what was the percentage change in the gross profit from 2005 to 2006
Choices:
-0.58646
1
-135.31354
0.58646
13.50847
Correct choice index: 3