Can you help with my missing year 2 and year 3 unrealized gains (losses) at year end and how did you calculate this?

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Mead Inc. began operations in Year 1, following is a series of transactions and events involving its long-term debt investments in available-for-sale securities. Year 1 Jan. 20 Purchased Johnson & Johnson bonds for $29,000. Feb. 9 Purchased notes of Sony for $63,990. June 12 Purchased bonds of Mattel for $50,000. Dec. 31 Fair values for debt in the portfolio are Johnson & Johnson, $32,900; Sony, $55,050; and Mattel, $57 , 150. Year 2 Apr. 15 Sold all of the bonds of Johnson & Johnson for $33,000. July 5 Sold all of the bonds of Mattel for $42,500. July 22 Purchased notes of Sara Lee for $20,100. Aug. 19 Purchased bonds of Kodak for $21,950. Dec. 31 Fair values for debt in the portfolio are Kodak, $22, 650; Sara Lee, $21,500; and Sony, $65,000. Year 3 Feb. 27 Purchased bonds of Microsoft for $159,000. June 21 Sold all of the notes of Sony for $65, 200. June 30 Purchased bonds of Black & Decker for $59,900. Aug. 3 Sold all of the notes of Sara Lee for $18,300. Nov. 1 Sold all of the bonds of Kodak for $26,650. Dec. 31 Fair values for debt in the portfolio are Black & Decker, $60,300; and Microsoft, $160,500. Problem 15-2A Part 3 3. Complete the following table that summarizes (a) the realized gains and losses and (b) the unrealized gains or losses for the portfolio of long-term available-for-sale debt securities at each year-end. (Losses should be indicated by a minus sign.) Year 1 Year 2 Year 3 Realized gains (losses) Sale of Johnson & Johnson $ of $ 4,000 $ Sale of Matte 0 7,500) Sale of Sony 0 o $ 1,210 Sale of Sara Lee 0 0 1,800 Sale of Kodak 0 0 1,700 Total realized gains (losses) $ 0 $ (3,500) $ 4,110 Unrealized gains (losses) at year-end $ 2,110