Solve the following sql problem:
Had Bitcoin's price increased or decreased on 2013/5/5 compared with the price 7 days before?

Schema:
SCHEMA:
- Table: coins
  - Column: id
    - Samples: [1, 2, 3, 4, 5]
  - Column: name
    - Samples: [Bitcoin, Litecoin, Namecoin, Terracoin, Peercoin]
  - Column: slug
    - Samples: [bitcoin, litecoin, namecoin, terracoin, peercoin]
  - Column: symbol
    - Samples: [BTC, LTC, NMC, TRC, PPC]
  - Column: status
    - Samples: [active, active, active, active, active]
  - Column: category
    - Samples: [coin, coin, coin, coin, coin]
  - Column: description
    - Samples: [## **What Is Bitcoin (BTC)?**\n\nBitcoin is a decentralized cryptocurr..., ## What Is Litecoin (LTC)?\n\nLitecoin (LTC) is a cryptocurrency that ..., Namecoin (NMC) is a cryptocurrency . Users are able to generate NMC th..., Terracoin (TRC) launched in 2012 with the aim to create an easier to u..., Peercoin (PPC) is a cryptocurrency . Users are able to generate PPC th... (truncated)]
  - Column: subreddit
    - Samples: [bitcoin, litecoin, namecoin, terracoin, peercoin]
  - Column: notice
    - Samples: [None, None, None, None, None]
  - Column: tags
    - Samples: [mineable, pow, sha-256, store-of-value, state-channels, coinbase-ventu..., mineable, pow, scrypt, medium-of-exchange, binance-chain, mineable, pow, sha-256, platform, mineable, pow, sha-256, masternodes, mineable, hybrid-pow-pos, sha-256, medium-of-exchange, payments (truncated)]
  - Column: tag_names
    - Samples: [Mineable, PoW, SHA-256, Store of Value, State channels, Coinbase Ventu..., Mineable, PoW, Scrypt, Medium of Exchange, Binance Chain, Mineable, PoW, SHA-256, Platform, Mineable, PoW, SHA-256, Masternodes, Mineable, Hybrid - PoW & PoS, SHA-256, Medium of Exchange, Payments (truncated)]
  - Column: website
    - Samples: [https://bitcoin.org/, https://litecoin.org/, https://www.namecoin.org/, http://www.terracoin.io/, http://www.peercoin.net]
  - Column: platform_id
    - Samples: [None, None, None, None, None]
  - Column: date_added
    - Samples: [2013-04-28T00:00:00.000Z, 2013-04-28T00:00:00.000Z, 2013-04-28T00:00:00.000Z, 2013-04-28T00:00:00.000Z, 2013-04-28T00:00:00.000Z]
  - Column: date_launched
    - Samples: [None, None, None, None, None]
- Table: historical
  - Column: date
    - Samples: [2013-04-28, 2013-04-28, 2013-04-28, 2013-04-28, 2013-04-28]
  - Column: coin_id
    - Samples: [1, 2, 5, 3, 4]
  - Column: cmc_rank
    - Samples: [1, 2, 3, 4, 5]
  - Column: market_cap
    - Samples: [1488566971.9558687, 74637021.56790735, 7250186.647688276, 5995997.185385211, 1503099.4011388426]
  - Column: price
    - Samples: [134.210021972656, 4.34840488433838, 0.386524856090546, 1.10723268985748, 0.646892309188843]
  - Column: open
    - Samples: [None, None, None, None, None]
  - Column: high
    - Samples: [None, None, None, None, None]
  - Column: low
    - Samples: [None, None, None, None, None]
  - Column: close
    - Samples: [None, None, None, None, None]
  - Column: time_high
    - Samples: [None, None, None, None, None]
  - Column: time_low
    - Samples: [None, None, None, None, None]
  - Column: volume_24h
    - Samples: [0.0, 0.0, 0.0, 0.0, 0.0]
  - Column: percent_change_1h
    - Samples: [0.639231, 0.799273, -0.934763, -0.0505028, 0.609159]
  - Column: percent_change_24h
    - Samples: [None, None, None, None, None]
  - Column: percent_change_7d
    - Samples: [None, None, None, None, None]
  - Column: circulating_supply
    - Samples: [11091325.0, 17164230.0, 18757362.0, 5415300.0, 2323569.75]
  - Column: total_supply
    - Samples: [11091325.0, 17164230.0, 18757362.0, 5415300.0, 2323569.75]
  - Column: max_supply
    - Samples: [21000000.0, 84000000.0, None, None, 42000000.0]
  - Column: num_market_pairs
    - Samples: [None, None, None, None, None]

SELECT (CASE WHEN T2.percent_change_7d > 0 THEN 'INCREASED' ELSE 'DECREASED' END) FROM coins AS T1 INNER JOIN historical AS T2 ON T1.id = T2.coin_id WHERE T2.date = '2013-05-05' AND T1.name = 'Bitcoin'