Year	Percent
1950	9.05251
1955	12.16925
1960	13.24466
1965	11.6583
1970	10.90871
1975	10.65996
1980	11.68313
1985	11.48999
1990	10.53919
1995	9.91763
2000	9.47622
2005	9.7659
2010	9.31668
2015	9.56271
2020	9.84893
2025	9.04493
2030	8.46981
2035	8.11429
2040	7.95897
2045	7.86141
2050	7.71145
2055	7.42379
2060	7.06965
2065	6.73473
2070	6.48876
2075	6.32536
2080	6.17462
2085	6.00682
2090	5.80442
2095	5.59914
2100	5.4284