Year	Percent
1950	9.09144
1955	9.90376
1960	6.68926
1965	11.53573
1970	10.63163
1975	9.08679
1980	9.2676
1985	7.21051
1990	7.6994
1995	8.04766
2000	7.56953
2005	7.29767
2010	6.65653
2015	5.85871
2020	4.80757
2025	4.8827
2030	5.09496
2035	5.1326
2040	5.16776
2045	4.99473
2050	4.70121
2055	4.51881
2060	4.55906
2065	4.72653
2070	4.86935
2075	4.90641
2080	4.84752
2085	4.76351
2090	4.74417
2095	4.8027
2100	4.87873