2013 2015 2017 2018 2019 2020 2021 2,000 1,500 1,000 500 2,718 2,718 141.3 487.2 682.6 1,631 1,729 1,812 2,042 2,252 3,318 2010 2009 2008 2007 3,069 3,069 1,133 0 301.5 ݄ גࣜձࣾϥΠϑϓϥβԣઃཱ ݄ ʮ΄͚Μͷ૭ޱʯ ୈ߸ύʔτφʔ Ճໍاۀͱͯ͠ࣄۀ։࢝ ݄ ʮΘʔ͘ͽͶ͢Ԃʯ ࣄۀࢀը ݄ ͱʹ͋ʔΔגࣜձ໊ࣾࣾมߋ ݄ اۀཧ೦ ʮͱʹ˓ʯ ੍ఆ ݄ גࣜձࣾอݥͱܦӦ౷߹ 3,276 3,187 3,187 ݄ ৽ଔୈظੜ࠾༻ 11