Year	Percent
1950	8.75106
1955	8.03001
1960	11.1235
1965	12.20899
1970	11.10886
1975	8.8398
1980	8.98625
1985	8.92865
1990	9.51386
1995	9.63796
2000	7.7483
2005	5.78152
2010	5.13585
2015	5.31343
2020	5.50389
2025	4.99122
2030	4.51102
2035	4.20407
2040	4.03265
2045	4.08565
2050	4.2319
2055	4.28919
2060	4.22395
2065	4.14752
2070	4.16204
2075	4.29267
2080	4.4765
2085	4.61387
2090	4.6408
2095	4.59595
2100	4.56673