Year	Percent
1950	7.85801
1955	7.92797
1960	7.87865
1965	9.14739
1970	7.84135
1975	6.0203
1980	6.60989
1985	7.35089
1990	8.36024
1995	6.2939
2000	6.16417
2005	5.90201
2010	5.1387
2015	4.93676
2020	5.02376
2025	4.74443
2030	4.73432
2035	4.72664
2040	4.71206
2045	4.63015
2050	4.60281
2055	4.6384
2060	4.66968
2065	4.70977
2070	4.75426
2075	4.77485
2080	4.7761
2085	4.77852
2090	4.7895
2095	4.8001
2100	4.80099