Year	Percent
1950	11.90721
1955	11.56959
1960	11.95732
1965	11.22844
1970	10.33661
1975	9.62408
1980	7.97759
1985	7.43364
1990	7.82813
1995	7.69764
2000	7.01697
2005	6.59218
2010	6.82903
2015	6.40596
2020	6.19232
2025	5.99192
2030	5.75435
2035	5.51713
2040	5.36444
2045	5.28432
2050	5.21449
2055	5.14672
2060	5.06488
2065	4.97848
2070	4.90115
2075	4.83904
2080	4.7852
2085	4.7409
2090	4.69431
2095	4.64595
2100	4.59814