also have had a stabilising effect on the stock market prices in the UK. A simulation of the entry in 1999 indicated that it would have had an overall positive, though small, long-term effect on the UK's GDP if the entry had been made with the rate of exchange of the pound to the euro at that time. With a lower rate of exchange, the entry would have had more clearly a positive effect on the UK's GDP. A 2009 study about the effect of an entry in the coming years claimed that the effect would likely be positive, improving the stability for the UK economy. An interesting parallel can be seen in the 19th century discussions concerning the possibility of the UK joining the Latin Monetary Union. Public opinion The wording of the question may have varied, but the figures showed that a majority of British people have been consistently against adopting the euro. Public support for the euro in the United Kingdom according to Eurobarometer polls Sterling zone If the UK had joined the eurozone, this would also have affected the Crown dependencies and some British overseas territories that also use the pound sterling, or which have a currency on a par with sterling. In the Crown Dependencies, the Isle of Man, Jersey, Guernsey, and Alderney, pounds all share the ISO 4217 code GBP. In the British Overseas Territories, Gibraltar, Falkland Islands, British Indian Ocean Territory and Saint Helena, pounds are also fixed so that £1 in the local currency equals £1 in sterling. The British Antarctic Territory and South Georgia and the South Sandwich Islands do not have their own currencies and use the pound sterling. When France adopted the euro, so did the French overseas departments and territories that used the French franc. The CFP franc, the CFA franc, and the Comorian franc, that are used in overseas territories and some African countries, had fixed exchange rates with the French franc, but not at par – for various historical reasons they were worth considerably less, at 1 French franc = 18.2 CFP francs, 75 Comorian francs or 100 CFA francs. The CFA franc and the Comorian franc are linked to the euro at fixed rates with free convertibility maintained at the expense of the French Treasury. The CFP franc is linked to the euro at a fixed rate. It was suggested that the sterling zone territories